AVX
NTC Thermistors
1
Contents
NTC Thermistors
NTC THERMISTORS
General Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Selection Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Ordering Code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
RoHS/ELV Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
NTC SMD Thermistors
NC 12 - NC 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
With Nickel Barrier Termination NB 12 - NB 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
With Nickel Barrier Termination NB 21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Surface Mounting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
NTC Accurate
NJ 28 - NI 24 - NK 20 - NP 30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
NTC Disc Thermistors
ND 03/06/09 - NE 03/06/09 - NV 06/09. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
NTC Leadless Disc Thermistors
NR Series for Consumer and Automotive Applications . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Resistance
Tables of Resistance vs Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Identification – Traceability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
As we are anxious that our customers should benefit from the latest developments in the technology and standards,
AVX reserves the right to modify the characteristics published in this brochure.
NOTICE: Specifications are subject to change without notice. Contact your nearest AVX Sales Office for the latest specifications. All statements,
information and data given herein are believed to be accurate and reliable, but are presented without guarantee, warranty, or responsibility of any kind,
expressed or implied. Statements or suggestions concerning possible use of our products are made without representation or warranty that any such
use is free of patent infringement and are not recommendations to infringe any patent. The user should not assume that all safety measures are
indicated or that other measures may not be required. Specifications are typical and may not apply to all applications.
2
1 – INTRODUCTION
NTC thermistors are thermally sensitive resistors made from
a mixture of Mn, Ni, Co, Cu, Fe oxides. Sintered ceramic
bodies of various sizes can be obtained. Strict conditions
of mixing, pressing, sintering and metallization ensure an
excellent batch-to-batch product characteristics.
This semi-conducting material reacts as an NTC resistor,
whose resistance decreases with increasing temperature.
This Negative Temperature Coefficient effect can result from
an external change of the ambient temperature or an inter-
nal heating due to the Joule effect of a current flowing
through the thermistor.
By varying the composition and the size of the thermistors,
a wide range of resistance values (0.1Ω to 1MΩ) and tem-
perature coefficients (-2 to -6% per °C) can be achieved.
RoHS (Restriction of Hazardous Substances - European
Union directive 2002/95/EC).
ELV (End of Life-Vehicle - European Union directive
2000/53/EC).
All Thermistor Products have been fully RoHS/ELV since
before 2006.
Chip Thermistor NB RoHS/ELV Status: external Plating
100% smooth semi-bright Sn as standard SnPb Termination
available on request.
2 – MAIN CHARACTERISTICS
2.1 CHARACTERISTICS WITH NO DISSIPATION
2.1.1. Nominal Resistance (Rn)
The nominal resistance of an NTC thermistor is generally
given at 25°C. It has to be measured at near zero power
so that the resultant heating only produces a negligible
measurement error.
The following table gives the maximum advised measure -
ment voltage as a function of resistance values and thermal
dissipation factors.
This voltage is such that the heating effect generated by the
measurement current only causes a resistance change of
1% ΔRn/Rn.
2.1.2. Temperature -
Resistance characteristics R (T)
This is the relation between the zero power resistance and
the temperature. It can be determined by experimental mea-
surements and may be described by the ratios R (T) /R
(25°C) where:
R (T) is the resistance at any temperature T
R (25°C) is the resistance at 25°C.
These ratios are displayed on pages 29 to 33.
2.1.3. Temperature coefficient (α)
The temperature coefficient (␣) which is the slope of the
curve at a given point is defined by:
100 dR
␣= • and expressed in % per °C.
RdT
2.1.4. Sensitivity index (B)
The equation R = A exp (B/T) may be used as a rough
approximation of the characteristic R (T).
B is called the sensitivity index or constant of the material
used.
To calculate the B value, it is necessary to know the resis-
tances R1and R2of the thermistor at the temperatures
T1and T2.
The equation: R1= R2exp B ()
leads to: B (K) = 1• ᐍn ()
Conventionally, B will be most often calculated for tempe-
ratures T1= 25°C and T2= 85°C (298.16 K and 358.16 K).
In fact, as the equation R = A exp (B/T) is an approximation,
the value of B depends on the temperatures T1and T2by
which it is calculated.
For example, from the R (T) characteristic of material M
(values given on page 29), it can be calculated:
B (25 – 85) = 3950
B (0 – 60) = 3901
B (50 – 110) = 3983
When using the equation R = A exp (B/T) for this material,
the error can vary by as much as 9% at 25°C, 0.6% at 55°C
and 1.6% at 125°C.
Using the same equation, it is possible to relate the values of
the index B and the coefficient α:
1dR
␣= • • A exp (B/T) •
RdT
thus ␣= – expressed in %/°C
NTC Thermistors
General Characteristics
Ranges of Maximum measuring voltage
values (V)
(Ω)
δ= 2 mW/°C δ= 5 mW/°C δ= 10 mW/°C δ= 20 mW/°C
R 10 0.10
10 < R 100 0.13 0.18 0.24
100 < R 1,000 0.25 0.38 0.53 0.24
1,000 < R 10,000 0.73 1.1 1.5 2.0
10,000 < R 100,000 2.1 3.2 4.6
R < 100,000 6.4 9.7 14.5
1 -1
T
1T2
R1
R2
()
1 -1
T
1T2
=1
A exp (B/T)
-B
T2
B
T2
3
NTC Thermistors
General Characteristics
2.1.5. Further approximation of R (T) curve
The description of the characteristic R (T) can be improved
by using a greater number of experimental points, and by
using the equation:
1= A + B (ᐍ
n R) + C (ᐍ
n R)3
T
The parameters A, B and C are determined by solving the
set of equations obtained by using the measured resis-
tances at three temperatures.
The solution of the above equation gives the resistance at
any temperature:
The precision of this description is typically 0.2°C for the
range –50 to +150°C (A, B, C being determined with exper-
imental values at –20, +50 and 120°C) or even better if this
temperature range is reduced. The ratios R(T)/R(25°C) for
each of the different materials shown on pages 29 to 33
have been calculated using the above method.
2.1.6. Resistance tolerance and temperature
precision
An important characteristic of a thermistor is the tolerance
on the resistance value at a given temperature.
This uncertainty on the resistance (DR/R) may be related to
the corresponding uncertainty on the temperature (DT),
using the relationship:
⌬T = 100 • ⌬R•1
R␣
Example: consider the thermistor ND06M00152J —
• R (25°C) = 1500 ohms
• Made from M material
• R (T) characteristic shown on page 23 gives:
␣= - 4.4%/°C at 25°C
• Tolerance ⌬R/R = ±5% is equivalent to:
⌬T = 5%/4.4%/°C = ±1.14°C
2.1.7. Resistance tolerance at any temperature
Any material used for NTC manufacturing always displays a
dispersion for the R (T) characteristic.
This dispersion depends on the type of material used
and has been especially reduced for our accuracy series
thermistors.
Thus, the tolerance on the resistance (⌬R2/R2) at a temper-
ature T2is the sum of two contributions as illustrated on
Figure 1:
– the tolerance ⌬R1/R1at a temperature T1used as a
reference.
– an additional contribution due to the dispersion on
the characteristic R (T) which may be called
“Manufacturing tolerance” (Tf).
Figure 1
Differentiating the equation R = A exp (B/T), the two contri-
butions on the tolerance at T can also be written:
⌬R2=⌬R1+⎪⎪• ⌬B
R2R1
The T(f) values given with the resistance – temperature
characteristics on pages 29 to 33 are based on a computer
simulation using this equation and experimental values.
2.1.8. Designing the resistance tolerances
Using the fact that the coefficient ␣decreases with temper-
ature (α= –B/T2), it is generally useful to define the closest
tolerance of the thermistor at the maximum value of the
temperature range where an accuracy in °C is required.
For example, let us compare the two designs 1 and 2
hereafter:
Only the Design 2 is able to meet the requirement ΔT ⯝1°C
from 25°C to 100°C.
RΩ
R25
25°CTTemperature (°C)
Graph with B
Graph with B ± ΔB
}(ΔR)25°C
}
}(ΔR)25°C
+
T
F
}= (ΔR) T
1-1
T
1T2
TRαDesign 1 Design 2
(°C) (Ω) (%/°C) ⌬R/R(%) ⌬T(°C) ⌬R/R(%) ⌬T(°C)
0 3275 -5.2 3.5 0.7 5.0 1.0
25 1000 -4.4 3.0 0.7 4.5 1.1
55 300 -3.7 3.5 1.0 4.0 1.1
85 109 -3.1 4.1 1.3 3.4 1.1
100 69.4 -2.9 4.5 1.6 3.0 1.0
A - 1/T
C
()
A - 1/T
C
()
ᐍn R (T) =
]
[-27
2
1
3
B
C
3 +3
2327 2+ 4 3
冑
冑
()
冑
-3+27
2
A - 1/T
C
() ()()
+3
2
冑
327 2+ 4 3
A - 1/T
C
()
B
C
()
冑
冑
()
4
2.1.9. Shaping of the R (T) characteristic
By the use of a resistor network, it is possible to modify the
R (T) characteristic of a thermistor so that it matches the
required form, for example a linear response over a restrict-
ed temperature range.
A single fixed resistor Rp placed in parallel with a thermistor
gives a S–shape resistance–temperature curve (see Figure 2)
which is substantially more linear at the temperature range
around the inflexion point (Ro, To).
Figure 2 – Linearization of a thermistor
It can be calculated that better linearization is obtained when
the fixed resistor value and the mid-range temperature are
related by the formula:
Rp = RTo x B – To
B+ 2To
For example, with a thermistor ND03N00103J —
R25°C = 10kΩ, B = 4080 K
good linearization is obtained with a resistor in parallel where
the value is:
Rp = 10,000 Ω x 4080 - 298 = 8088 Ω
4080 + (2 x 298)
2.1.10. Demonstration of the R (T) parameters
calculation
To help our customers when designing thermistors for
temperature measurement or temperature compensation,
software developed by our engineering department is avail-
able upon request.
2.2 CHARACTERISTICS WITH ENERGY
DISSIPATION
When a current is flowing through an NTC thermistor, the
power due to the Joule effect raises the temperature of the
NTC above ambient.
The thermistor reaches a state of equilibrium when the
power supplied becomes equal to the power dissipated in
the environment.
The thermal behavior of the thermistor is mainly dependent
on the size, shape and mounting conditions.
Several parameters have been defined to characterize these
properties:
2.2.1. Heat capacity (H)
The heat capacity is the amount of heat required to change
the temperature of the thermistor by 1°C and is expressed in
J/°C.
2.2.2. Dissipation factor (␦)
This is the ratio between the variation in dissipated power
and the variation of temperature of the NTC. It is expressed
in mW/°C and may be measured as:
␦= U.I
85 – 25
where U.I is the power necessary to raise to 85°C the tem-
perature of a thermistor maintained in still air at 25°C.
2.2.3. Maximum permissible temperature (T max)
This is the maximum ambient temperature at which the ther-
mistor may be operated with zero dissipation. Above this
temperature, the stability of the resistance and the leads
attachment can no longer be guaranteed.
2.2.4. Maximum permissible power at 25°C (Pmax)
This is the power required by a thermistor maintained in still
air at 25°C to reach the maximum temperature for which it is
specified.
For higher ambient temperatures, the maximum permissible
power is generally derated according to the Figure 3 here-
after and TL = Tmax – 10°C.
Figure 3 – Derating of maximum power
R
(kΩ)
T (°C)
RTO
Rp
RO
TO
Rp
P
max
25°TLTmax T°C
NTC Thermistors
General Characteristics
5
2.2.5. Voltage – Current curves V (l)
These curves describe the behavior of the voltage drop V
measured across the NTC as the current l through the NTC
is increased.
They describe the state of equilibrium between power
resulting from Joule effect and dissipated power in the
surroundings. (Figure 4)
Figure 4 – Voltage – current curve V (l)
Several zones can be identified:
– low current zone
dissipated energy only produces negligible heating and
the curve V (l) is almost linear.
– non-linear zone
the curve V (l) displays a maximum voltage Vmax for a
current lo.This maximum voltage Vmax and the temper-
ature Tmax reached by the NTC under these conditions
can be determined by using the equations:
P = V2/R = ␦(T - Tamb) and
R = Ramb • exp B (1/T - 1/Tamb)
therefore:
Tmax = B/2 - B2/4 - BTamb ~Tamb
Vmax = ␦(Tmax - Tamb ) • Ramb exp [B(1 - 1 )]
Tmax Tamb
where ␦is the dissipation factor and Tamb is the ambi-
ent temperature.
– high current zone
for higher currents, an increase in temperature of the
NTC decreases the resistance and the voltage more
rapidly than the increase of the current. Above a certain
dissipated power, the temperature of the NTC exceeds
the permissible value.
2.2.6. Current – Time curves l(t)
When voltage is applied to a thermistor, a certain amount of
time is necessary to reach the state of equilibrium described
by the V(l) curves.
This is the heating up time of the thermistor which depends
on the voltage and the resistance on one side and the heat
capacity and dissipation on the other.
The curves l(t) are of particular interest in timing applications.
2.2.7. Thermal time constant
When a thermistor is self-heated to a temperature T above
ambient temperature Tamb, and allowed to cool under zero
power resistance, this will show a transient situation.
At any time interval dt, dissipation of the thermistor
(␦(T – Tamb)dt) generates a temperature decrease –HdT,
resulting in the equation:
1dT = - ␦dt
(T - Tamb)H
The solution to this equation for any value of t, measured
from t = 0, is:
ᐍn(T - Tamb)= - ␦t
(To - Tamb)H
We can define a thermal time constant as:
= H/␦expressed in seconds.
Where the time t = :
(T - Tamb) / (To - Tamb) = exp - 1 = 0.368
expressing that for t = , the thermistor cools to 63.2% of the
temperature difference between the initial To and Tamb (see
Figure 5).
According to IEC 539 our technical data indicates mea-
sured with To = 85°C, Tamb = 25°C and consequently
T = 47.1°C.
Figure 5 – Temperature – time curve T(t)
2.2.8. Response time
More generally, it is possible to define a response time as the
time the thermistor needs to reach 63.2% of the total
temperature difference when submitted to a change in the
thermal equilibrium (for example from 60°C to 25°C in
silicone oil 47V20 Rhodorsil).
T (°C)
85
47.1
25 tt (s)
V
Vmax
IoI
NTC Thermistors
General Characteristics
( )
1+Tamb
B
冑
冑
6
TEMPERATURE MEASUREMENT
High sensitivity and low cost make NTC thermistors the most
common device used for temperature measurement.
Non-linearity of the R -T curve generally leads to the use of
a resistor network to linearize the signal. An example is
given in Figure 6.
More precise measurements and temperature display can
also be achieved with simple electronic equipment as
shown in Figure 7.
The choice of the model will particularly take into account
the small size (better response time) and the resistance
tolerance. Mounting conditions (dissipation), and input volt-
age (self-heating) will also be carefully defined to avoid serious
errors in temperature measurement.
TEMPERATURE CONTROL
AND ALARM
NTC thermistors can be used as a simple on-off control tem-
perature system or temperature alarm system. Figure 8 gives
an example of such a circuit.
When the temperature increases to a defined value, the
resistance of the thermistor decreases and the current
becomes sufficiently high to energize the relay and provide
temperature alarm or heating system turn-off.
The high sensitivity of thermistors (about 4% resistance
change for 1°C) allows the temperature to be controlled very
precisely.
TEMPERATURE COMPENSATION
As many electronic components (integrated circuits, ampli-
fiers,...) have a positive temperature coefficient of resistance,
NTC thermistors represent a cheap and interesting solution
to compensate for this effect and provide an improved
temperature stability for electronic equipment.
It is necessary to include the thermistor in a resistor network
(Figure 10) calculated in such a manner that the network
coefficient compensates exactly for the positive temperature
coefficient of the other component (Figure 9).
Common leaded discs or chip thermistors are well suited for
this application.
Figure 6 Figure 7
NTC Thermistors
Application Notes
R2
R1
R3
RNTC
Thermistor
circuit
A/D
converter
Display T°C
μ processor
with R/T
algorithm
Resistance
Temperature
RTotal
RNTC
RC
R
R
RNTC
RC
R1
R2
R3
RNTC
Figure 8
Figure 9 Figure 10
7
LIQUID LEVEL OR FLOW DETECTION
The dissipation of a thermistor is significantly different in a
liquid or in a gas, in a static fluid or in a stirred one. A liquid
level detector or a gas–flow measurement can be designed
using this property.
In Figure 11, the output voltage measured on the thermistor
depends upon the dissipation factor of its environment, and
can be illustrated by V-l curves (Figure 12).
This voltage can be used to detect the presence (V2) or
absence (V1) of liquid around the thermistor or measure the
flow speed.
A good design should define a precise operating temperature
range, where dissipation in the high dissipating medium at
highest ambient temperature remains higher than the dissipa-
tion in low dissipating medium at lowest ambient temperature.
SURGE PROTECTION
A soft start of sensitive apparatus can be achieved by using
NTC thermistors as described in Figures 13 and 14.
At turn-on, the NTC absorbs the surge current, limits the
current across the equipment and protects it. Then, the
thermistor heats, its resistance decreases and most of the
power becomes applied to the apparatus.
In its design, the thermistor will be selected with a thermal
capacity higher than the surge energy to absorb.
TIME DELAY
The current-time characteristic of a thermistor is used in time
delay applications such as delaying energization of a relay
after application of power to an electrical circuit.
The time delay, time necessary for the thermistor to heat up
to the temperature where its resistance allows the current to
reach the switching value of the relay, is mainly defined with
the nominal resistance of the thermistor.
The time delay is also strongly dependent upon the ambient
temperature, as shown in Figure 15.
Figure 11
Figure 12
Figure 15
Current T = 50°C
T = 40°C
T = 25°C
Time
Voltage
Vin
V2
V1
Vin/RS
Current
k2
k1
Vin
RS
RNTC
V
NTC Thermistors
Application Notes
Figure 13
Figure 14
RNTC
Equipment
Power
Unprotected equipment
Protected equipment
NTC absorbed power
Time
8
NTC Thermistors
Selection Guide
Types Range of Values Main Applications Page
R at 25°C
SMD - Hybrid circuit
NC 12/20 - Temperature 10
NB 12/20 Compensation 12
NB 21/23 14
Accuracy Series
19
Leaded Discs
21
Leadless Discs
27
- Temperature
measurement
- Temperature
measurement
and regulation
- Level detection
- Compensation
- Automotive
and industrial
thermal control
Custom designed products
generally defined at two temperatures
NJ 28
NI 24
NP 30
NK 20
N.03
N.06
N.09
NR
10 Ω 1 MΩ
2 kΩ 100 kΩ
2 kΩ 100 kΩ
330 Ω 1 MΩ
150 Ω 330 kΩ
68 Ω 150 kΩ
9
NC20 K 0 0103 M – –
NTC Thermistors
Ordering Code
Type
NC 12
NC 20
NB 12
NB 20
NB 21
NB 23
NJ 28
NI 24
NK 20
ND 03
ND 06
ND 09
NR ..
Material
Code
I
J
K
L
M
N
P
Q
R
S
T
U
(See tables
pages 29 to 33)
Material Code
2nd Digit
NJ, NK Types: A
NB, NC Types:
C or O or 5 or 2
Other Types: 0
Resistance at 25ºC
(EIA Code)
Tolerance
on Resistance
at 25°C
F: ± 1%
G: ± 2%
H: ± 3%
J: ± 5%
K: ± 10%
L: ± 15%
M: ± 20%
X: ± 25%
Suffix
HOW TO ORDER
ROHS/ELV COMPLIANCE BY PRODUCT FAMILY
For leadless discs
(types NR) see
specification and
ordering code on
pages 28.
1. Resistance expressed by two
significant figures
1st digit: 0 (zero)
2nd and 3rd digits: the first two
significant figures of the resistance
value at 25°C.
4th digit:
– for values ≥ 10 Ω:
the number of ZEROS to be
added to the resistance value
– for values ≥ 1 Ωand ≤ 9.9 Ω:
the numerical 9 signifying that the
resistance value is to be multiplied
by 0.1
– for values < 1 Ω: the numerical 8
signifying that the resistance
value is to be multiplied by 0.01
Examples: 1000 Ω: 0102
8.2 Ω: 0829
0.47 Ω: 0478
2. Resistance expressed by three
significant figures
1st, 2nd and 3rd digits: the first three
significant figures of the resistance
value at 25°C.
4th digit:
– for values > 100 Ω:
the number of ZEROS to be
added to the resistance value
– for values > 10 Ωand < 100 Ω:
the numerical 9 signifying that the
resistance value is to be multiplied
by 0.01
– for values > 1 Ωand < 10 Ω:
the numerical 8 signifying that the
capacitance value is to be multiplied
by 0.01
Examples : 196 Ω: 1960
47.2 Ω: 4729
RoHS (Restriction of Hazardous Substances - European Union directive 2002/95/EC).
ELV (End of Life-Vehicle - European Union directive 2000/53/EC).
All Thermistor Products have been fully RoHS/ELV since before 2006.
Chip Thermistor NB RoHS/ELV Status: external Plating 100% smooth semi-bright Sn as standard SnPb Termination available
on request.
Products that are supplied AS STANDARD in RoHS/ELV compliant form for listed
Industrial Product Family RoHS Compliant for Material Listed
Group Series Cadmium Hexavalent Lead Mercury PBBs PBDEs
Chromium
Leaded NTC Thermistors NF NI 444444
Thermistors Thermistors ND NJ NP 444444
SMD Thermistors NC 444444
Thermistors Thermistors NB 444444
LEAD-FREE COMPATIBLE
COMPONENT
10
Typ es NC 12 NC 20
IEC SIZE : 0805 IEC SIZE : 1206
Terminations Silver – palladium – platinum metallization
Marking On packaging only
Climatic category 40/125/56
Operating temperature -55°C to +150°C
Tolerance on Rn (25°C) ±5%, ±10%, ±20%
Maximum dissipation at 25°C 0.12 W 0.24 W
Thermal dissipation factor 2 mW/°C 4 mW/°C
Thermal time constant 5 s 7 s
NTC SMD Thermistors
NC 12 – NC 20
Chip thermistors are a high quality and low cost device espe-
cially developed for surface mounting applications. They are
widely used for temperature compensation but can also
achieve temperature control of printed circuits. Its silver -
palladium - platinum metallization provides a high degree of
resistance to dewetting of the terminations during soldering
(typically 260°C / 30 s).
APPLICATIONS
• LCD compensation
• Battery packs
• Mobile phones
• CD players
• Heating systems
• Air-conditioning systems
• Temperature control of Switch Mode Power Supplies
• Compensation of pressure sensors
• Protection of power transistors in various electronic circuits
2 (.079) ± 0.3 (.012)
1.25 (.049)
± 0.2 (.008)
0.5 (.020)
... 1.3 (.051)
0.2 (.008) min 0.2 (.008) min
3.2 (.126) ± 0.4 (.016)
0.2 (.008) min 0.2 (.008) min
1.6 (.063)
± 0.25 (.010)
0.5 (.020)
... 1.5 (.059)
Resistance - Temperature characteristics: pages 29 to 33.
HOW TO ORDER
NC 20
Type
K 0
Material Code
K
(See tables pages 11, 29-33)
0103
Resistance
10,000 Ω
M
Tolerance
M (±20%)
J (±5%)
K (±10%)
BA
Suffix: Packaging
– –: Bulk
BA: Plastic tape
(180mm diam. reel)
BE: Plastic tape (1/2 reel)
BC: Plastic tape
(330mm diam. reel)
BB: Cardboard tape
(180mm diam. reel)
BF: Cardboard tape (1/2 reel)
BD: Cardboard tape
(330mm diam. reel)
DIMENSIONS: millimeters (inches)
11
NTC SMD Thermistors
NC 12 – NC 20
NC 12
IEC SIZE : 0805
Typ e s Rn at 25°C Material B (K) ␣at 25°C
(Ω) Code (⌬B/B )(%/°C)
NC 12 KC 0 180 18
NC 12 KC 0 220 22
NC 12 KC 0 270 27
NC 12 KC 0 330 33
NC 12 KC 0 390 39 KC 3470 ± 5% – 3.9
NC 12 KC 0 470 47
NC 12 KC 0 560 56
NC 12 KC 0 680 68
NC 12 KC 0 820 82
NC 12 KC 0 101 100
NC 12 MC 0 121 120
NC 12 MC 0 151 150
NC 12 MC 0 181 180
NC 12 MC 0 221 220
NC 12 MC 0 271 270
NC 12 MC 0 331 330
NC 12 MC 0 391 390
NC 12 MC 0 471 470
NC 12 MC 0 561 560 MC 3910 ± 3% – 4.4
NC 12 MC 0 681 680
NC 12 MC 0 821 820
NC 12 MC 0 102 1,000
NC 12 MC 0 122 1,200
NC 12 MC 0 152 1,500
NC 12 MC 0 182 1,800
NC 12 MC 0 222 2,200
NC 12 MC 0 272 2,700
NC 12 MC 0 332 3,300
NC 12 J 0 0332 3,300
NC 12 J 0 0392 3,900 J 3480 ± 3% – 3.9
NC 12 J 0 0472 4,700
NC 12 J 0 0562 5,600
NC 12 K 0 0682 6,800
NC 12 K 0 0822 8,200 K 3630 ± 3% – 4.0
NC 12 K 0 0103 10,000
NC 12 K 0 0123 12,000
NC 12 L 0 0153 15,000 L 3790 ± 3% – 4.2
NC 12 L 0 0183 18,000
NC 12 M 0 0223 22,000
NC 12 M 0 0273 27,000 M 3950 ± 3% – 4.4
NC 12 M 0 0333 33,000
NC 12 M 0 0393 39,000
NC 12 N 0 0473 47,000 N 4080 ± 3% – 4.6
NC 12 N 0 0563 56,000
NC 12 L 2 0683 68,000 L2 3805 ± 3% – 4.1
NC 12 N 0 0823 82,000 N 4080 ± 3% – 4.6
NC 12 P 0 0104 100,000
NC 12 P 0 0124 120,000 P 4220 ± 3% – 4.7
NC 12 P 0 0154 150,000
NC 12 P 0 0184 180,000
NC 12 Q 0 0224 220,000 Q 4300 ± 3% -4.7
NC 20
IEC SIZE : 1206
Types Rn at 25°C Material B (K) ␣at 25°C
(Ω) Code (⌬B/B )(%/°C)
NC 20 KC 0 100 10
NC 20 KC 0 120 12
NC 20 KC 0 150 15
NC 20 KC 0 180 18
NC 20 KC 0 220 22
NC 20 KC 0 270 27 KC 3470 ± 5% – 3.9
NC 20 KC 0 330 33
NC 20 KC 0 390 39
NC 20 KC 0 470 47
NC 20 KC 0 560 56
NC 20 KC 0 680 68
NC 20 KC 0 820 82
NC 20 KC 0 101 100
NC 20 MC 0 121 120
NC 20 MC 0 151 150
NC 20 MC 0 181 180
NC 20 MC 0 221 220
NC 20 MC 0 271 270
NC 20 MC 0 331 330
NC 20 MC 0 391 390 MC 3910 ± 3% – 4.4
NC 20 MC 0 471 470
NC 20 MC 0 561 560
NC 20 MC 0 681 680
NC 20 MC 0 821 820
NC 20 MC 0 102 1,000
NC 20 MC 0 122 1,200
NC 20 MC 0 152 1,500
NC 20 I 0 0182 1,800
NC 20 I 0 0222 2,200
NC 20 I 0 0272 2,700 I 3250 ± 5% – 3.7
NC 20 I 0 0332 3,300
NC 20 J 0 0392 3,900
NC 20 J 0 0472 4,700 J 3480 ± 3% – 3.9
NC 20 J 0 0562 5,600
NC 20 J 0 0682 6,800
NC 20 K 0 0822 8,200
NC 20 K 0 0103 10,000 K 3630 ± 3% – 4.0
NC 20 K 0 0123 12,000
NC 20 K 0 0153 15,000
NC 20 L 0 0183 18,000 L 3790 ± 3% – 4.2
NC 20 L 0 0223 22,000
NC 20 M 0 0273 27,000
NC 20 M 0 0333 33,000 M 3950 ± 3% – 4.4
NC 20 M 0 0393 39,000
NC 20 M 0 0473 47,000
NC 20 N 0 0563 56,000
NC 20 N 0 0683 68,000 N 4080 ± 3% – 4.6
NC 20 N 0 0823 82,000
NC 20 N 0 0104 100,000
NC 20 P 0 0124 120,000
NC 20 P 0 0154 150,000 P 4220 ± 3% – 4.7
NC 20 P 0 0184 180,000
NC 20 P 0 0224 220,000
NC 20 Q 0 0274 270,000
NC 20 Q 0 0334 330,000 Q 4300 ± 3% – 4.7
NC 20 Q 0 0394 390,000
NC 20 Q 0 0474 470,000
NC 20 R 0 0564 560,000
NC 20 R 0 0684 680,000 R 4400 ± 3% – 4.8
NC 20 R 0 0824 820,000
NC 20 R 0 0105 1,000,000
(1) ± 5%
(2) ± 3%
(1) ± 5%
(2) ± 3%
TABLE OF VALUES
12
NTC SMD Thermistors
With Nickel Barrier Termination NB 12 - NB 20
Typ es NB 12 NB 20
IEC SIZE : 0805 IEC SIZE : 1206
Terminations Nickel Barrier
Marking On packaging only
Climatic category 40/125/56
Operating temperature -55°C to +150°C
Tolerance on Rn (25°C) ±5%, ±10%, ±20%
Maximum dissipation at 25°C 0.12 W 0.24 W
Thermal dissipation factor 2 mW/°C 4 mW/°C
Thermal time constant 5 s 7s
Chip thermistors are high quality and low cost devices
especially developed for surface mounting applications. They
are widely used for temperature compensation but can also
achieve temperature control of printed circuits.
A nickel barrier metallization provides outstanding qualities of
solderability and enables this chip to meet the requirements
of the most severe soldering processes.
APPLICATIONS
• LCD compensation
• Battery packs
• Mobile phones
• CD players
• Heating systems
• Air-conditioning systems
• Temperature control of Switch Mode Power Supplies
• Compensation of pressure sensors
• Protection of power transistors in various electronic circuits
2 (.079) ± 0.3 (.012)
1.25 (.049)
± 0.2 (.008)
0.5 (.020)
... 1.3 (.051)
0.2 (.008) min 0.2 (.008) min
3.2 (.126) ± 0.4 (.016)
0.2 (.008) min 0.2 (.008) min
1.6 (.063)
± 0.25 (.010)
0.5 (.020)
... 1.5 (.059)
Resistance - Temperature characteristics: pages 29 to 33.
HOW TO ORDER
NB 20
Type
K 0
Material Code
K
(See tables page 13)
0103
Resistance
10,000 Ω
M
Tolerance
M (±20%)
J (±5%)
K (±10%)
BA
Suffix: Packaging
– –: Bulk
BA: Plastic tape
(180mm diam. reel)
BE: Plastic tape (1/2 reel)
BC: Plastic tape
(330mm diam. reel)
BB: Cardboard tape
(180mm diam. reel)
BF: Cardboard tape (1/2 reel)
BD: Cardboard tape
(330mm diam. reel)
DIMENSIONS:
millimeters (inches)
NB 20
IEC SIZE : 1206
Typ e s Rn at 25°C Material B (K) ␣at 25°C
(Ω) Code (⌬B/B )(%/°C)
NB 20 MC 0 221 220 MC 3910 ± 3% – 4.4
NB 20 MC 0 102 1,000 MC 3910 ± 3% – 4.4
NB 20 J 0 0472 4,700
NB 20 J 0 0562 5,600 J 3480 ± 3% – 3.9
NB 20 J 0 0682 6,800
NB 20 J 5 0822 8,200 J5 3480 ± 3% – 3.9
NB 20 K 0 0103 10,000 K 3630 ± 3% – 4.0
NB 20 K 0 0123 12,000
NB 20 L 0 0153 15,000
NB 20 L 0 0183 18,000 L 3790 ± 3% – 4.2
NB 20 L 0 0223 22,000
NB 20 M 0 0273 27,000
NB 20 M 0 0333 33,000 M 3950 ± 3% – 4.4
NB 20 M 0 0393 39,000
NB 20 M 0 0473 47,000
NB 20 N 0 0563 56,000
NB 20 N 0 0683 68,000 N 4080 ± 3% – 4.6
NB 20 N 0 0823 82,000
NB 20 N 5 0104 100,000 N5 4160 ± 3% – 4.7
NB 20 P 0 0124 120,000
NB 20 P 0 0154 150,000
NB 20 P 0 0184 180,000 P 4220 ± 3% – 4.7
NB 20 P 0 0224 220,000
NB 20 Q 0 0274 270,000
NB 20 Q 0 0334 330,000
NB 20 Q 0 0394 390,000 Q 4300 ± 3% – 4.7
NB 20 Q 0 0474 470,000
NB 20 Q 0 0564 560,000
NB 20 R 0 0684 680,000
NB 20 R 0 0824 820,000 R 4400 ± 3% – 4.8
NB 20 R 0 0105 1,000,000
(1) ± 5%
(2) ± 3%
13
NTC SMD Thermistors
With Nickel Barrier Termination NB 12 – NB 20
NB 12
IEC SIZE : 0805
Typ e s Rn at 25°C Material B (K) ␣at 25°C
(Ω) Code (⌬B/B )(%/°C)
NB 12 KC 0 180 18
NB 12 KC 0 220 22
NB 12 KC 0 270 27
NB 12 KC 0 330 33
NB 12 KC 0 390 39 KC 3470 ± 5% – 3.9
NB 12 KC 0 470 47
NB 12 KC 0 560 56
NB 12 KC 0 680 68
NB 12 KC 0 820 82
NB 12 KC 0 101 100
NB 12 MC 0 121 120
NB 12 MC 0 151 150
NB 12 MC 0 181 180
NB 12 MC 0 221 220
NB 12 MC 0 271 270
NB 12 MC 0 331 330
NB 12 MC 0 391 390
NB 12 MC 0 471 470
NB 12 MC 0 561 560 MC 3910 ± 3% – 4.4
NB 12 MC 0 681 680
NB 12 MC 0 821 820
NB 12 MC 0 102 1,000
NB 12 MC 0 122 1,200
NB 12 MC 0 152 1,500
NB 12 MC 0 182 1,800
NB 12 MC 0 222 2,200
NB 12 MC 0 272 2,700
NB 12 MC 0 332 3,300
NB 12 J 0 0332 3,300
NB 12 J 0 0392 3,900 J 3480 ± 3% – 3.9
NB 12 J 0 0472 4,700
NB 12 J 0 0562 5,600
NB 12 K 0 0682 6,800
NB 12 K 0 0822 8,200 K 3630 ± 3% – 4.0
NB 12 K 0 0103 10,000
NB 12 L 0 0123 12,000 L 3790 ± 3% – 4.2
NB 12 L 0 0153 15,000
NB 12 M 0 0183 18,000
NB 12 M 0 0223 22,000 M 3950 ± 3% – 4.4
NB 12 M 0 0273 27,000
NB 12 M 0 0333 33,000
NB 12 N 0 0393 39,000
NB 12 N 0 0473 47,000 N 4080 ± 3% – 4.6
NB 12 N 0 0563 56,000
NB 12 L 2 0683 68,000 L2 3805 ± 3% – 4.1
NB 12 N 5 0683 68,000 N5 4160 ± 3% – 4.7
NB 12 N 5 0823 82,000
NB 12 P 0 0104 100,000 P 4220 ± 3% – 4.7
NB 12 SC 0104 100,000 SC 4500 ± 3% – 4.8
NB 12 P 0 0124 120,000
NB 12 P 0 0154 150,000 P 4220 ± 3% – 4.7
NB 12 P 0 0184 180,000
NB 12 Q 0 0224 220,000 Q 4300 ± 3% – 4.7
NB 12 Q 0 0274 270,000
NB 12 R 0 0105 1,000,000 R 4400 ± 3% – 4.8
(1) ± 5%
(2) ± 3%
TABLE OF VALUES
14
NTC SMD Thermistors
With Nickel Barrier Termination NB 21
Typ es NB 21
IEC SIZE : 0603
Terminations Nickel Barrier
Marking On packaging only
Climatic category 40/125/56
Operating temperature -55°C to +150°C
Tolerance on Rn (25°C) ±5%, ±10%, ±20%
Maximum dissipation at 25°C 0.07 W
Thermal dissipation factor 1 mW/°C
Thermal time constant 4 s
Chip thermistors are high quality and low cost devices
especially developed for surface mounting applications. They
are widely used for temperature compensation but can also
achieve temperature control of printed circuits.
A nickel barrier metallization provides outstanding qualities of
solderability and enables this chip to meet the requirements
of the most severe soldering processes.
APPLICATIONS
• LCD compensation
• Battery packs
• Mobile phones
• CD players
• Heating systems
• Air-conditioning systems
• Temperature control of Switch Mode Power Supplies
• Compensation of pressure sensors
• Protection of power transistors in various electronic circuits
1.6 (.063) 0.2 (.008)
0.8 (.031)
±0.2 (.008)
0.8 (.031)
±0.2 (.008)
0.2 (.008) min 0.2 (.008) min
Resistance - Temperature characteristics: pages 29 to 33.
HOW TO ORDER
NB 21
Type
K 0
Material Code
K
(See tables page 15)
0103
Resistance
10,000 Ω
M
Tolerance
M (±20%)
J (±5%)
K (±10%)
BB
Suffix: Packaging
– –: Bulk
BB: Cardboard tape
(180mm diam. reel)
BF: Cardboard tape (1/2 reel)
BD: Cardboard tape
(330mm diam. reel)
DIMENSIONS:
millimeters (inches)
15
NTC SMD Thermistors
With Nickel Barrier Termination NB 21
TABLE OF VALUES
NB 21
IEC SIZE : 0603
Typ e s Rn at 25°C Material B (K) ␣at 25°C
(Ω) Code (⌬B/B )(%/°C)
NB 21 KC 0 470 47
NB 21 KC 0 101 100 KC 3470 ± 5% – 3.9
NB 21 KC 0 471 470
NB 21 MC 0 102 1,000 MC 3910 ± 3% – 4.4
NB 21 J 0 0472 4,700 J 3480 ± 3% – 3.9
NB 21 J 5 0682 6,800 J5 3480 ± 3% – 3.9
NB 21 J 5 0103 10,000 3480 ± 3% – 3.9
NB 21 K 0 0103 10,000 K 3630 ± 3% – 4.0
NB 21 K 0 0153 15,000
NB 21 L 0 0223 22,000 L 3790 ± 3% – 4.2
NB 21 M 0 0333 33,000 M 3950 ± 3% – 4.4
NB 21 M 0 0473 47,000
NB 21 L 2 0683 68,000 L2 3805 ± 3% – 4.1
NB 21 N 0 0683 68,000 N 4080 ± 3% – 4.6
NB 21 N 5 0104 100,000 N5 4160 ± 3% – 4.7
NB 21 P 0 0154 150,000 P 4220 ± 3% – 4.7
NB 21 Q 0 0334 330,000 Q 4300 ± 3% – 4.7
NB 21 Q 0 0474 470,000
(1) ± 5%
(2) ± 3%
16
Packaging for Automatic Insertion
NTC Chip Thermistors / NC/NB Series
AUTOMATIC INSERTION
Super 8 Plastic Tape Packaging:
The mechanical and dimensional reel characteristics are in
accordance with the IEC publication 286-3.
R = 0.3 (.012) Max.
Max
3°
Max
3°
Max
3°
Max
3°
Cover Tape
30μ ± 5μ
T
K
A1
B1
B0
D0 P2
P0
W
Hole
F
E
A0
5.5 (.217)
±0.2 (.008)
Direction of
unreeling
+0.2 (.008)
-0
⭋1 (.039)
Designation Symbol Value Tolerance
Tape width W 8 ±0.2
Tape thickness T 0.4 max.
Pitch of the sprocket holes P0 4 ±0.1
Diameter of the sprocket holes D0 1.5 ±0.1
-0
Distance E 1.75 ±0.1
Distance (center to center) F 3.5 ±0.05
Distance (center to center) P2 2 ±0.1
Sizes of the NC 12 (0805) A0 1.5 ±0.1
cavities B0 2.4 ±0.1
K 1.4 max. K ±0.1
(size is adjustable)
(K = t1 +0.2)
NC 20 (1206) A0 1.95 ±0.1
B0 3.55 ±0.1
K 1.5 max. K ±0.1
(size is adjustable)
(K = t1 +0.2)
Bottom side
Reel
Upper side
Direction of unreeling
Reel
according to
ISO/DIS 3639-2
ø 12.75 (.502)
+ 0.15 (.006)
- 0
ø180 (7.09)
+ 0
- 2 (.079)
ø 20.5 (.087)
+ 0.5 (.020)
- 0
8.4 (.331)
+0.15 (.006)
14.4 (.567)
max.
ø 62 (2.44)
± 1.5 (.059)
QUANTITY PER REEL
Type Suffix Qty Per Reel
NC - NB 12 BA 4000
BE 2000
NC 20 - NB 20 BA 3000
BE 1500
17
Packaging for Automatic Insertion
NTC Chip Thermistors / NC/NB Series
AUTOMATIC INSERTION
8mm Paper Tape Packaging:
The mechanical and dimensional reel characteristics
are in accordance with the IEC publication 286-3.
P0
B0
P1
P2
D0
T
TOP
COVER
TAPE
BOTTOM
COVER
TAPE
CENTER LINES
OF CAVITY
CAVITY SIZE
SEE NOTE 1
10 PITCHES CUMULATIVE
TOLERANCE ON TAPE
0.20mm (0.008)
E1
F
G
User Direction of Feed
E2
W
T1
T1A0
Designation Symbol Value Tolerance
Tape width W 8 -.0.1/+0.3
Tape thickness T 1.1 max.
Pitch of the sprocket holes P04±0.1
Diameter of the sprocket holes D0
1.5 ±0.1
-0/+0.1
Distance E11.75 ±0.1
Distance (center to center) F 3.5 ±0.05
Distance (center to center) P22 ±0.05
Cover tape thickness T10.10 max.
Distance E26.25 min.
Distance G 0.75 min.
Component pitch 0805/0603 P1
4±0.1
0402 2 ±0.1
Bottom side
Reel
Upper side
Direction of unreeling
Reel
according to
ISO/DIS 3639-2
ø 12.75 (.502)
+ 0.15 (.006)
- 0
ø180 (7.09)
+ 0
- 2 (.079)
ø 20.5 (.087)
+ 0.5 (.020)
- 0
8.4 (.331)
+0.15 (.006)
14.4 (.567)
max.
ø 62 (2.44)
± 1.5 (.059)
QUANTITY PER REEL
Type Suffix Qty Per Reel
NB - NC 12 BB 4000
NB 21 BF 2000
STORAGE
Good solderability is maintained for at least twelve months,
provided the components are stored in their “as received”
packaging at less than 40°C and 70% RH.
SOLDERABILITY / LEACHING
Terminations to be well soldered after immersion in a 60/40
tin/lead solder bath at 235 ± 5°C for 2 ± 1 seconds.
Terminations will resist leaching for at least the immersion
times and conditions recommendations shown below.
NB products are compatible with a wide range of soldering
conditions consistent with good manufacturing practice for
surface mount components. This includes Pb free reflow
processes with peak temperatures up to 270ºC.
Recommended profiles for reflow and wave soldering are
shown below for reference.
NC products are recommended for lead soldering application
or gluing techniques.
Surface Mounting Guide
Chip Thermistor – Application Notes
REFLOW SOLDERING
WAVE SOLDERING
18
P/N Termination Solder Solder Immersion
Type Tin/Lead Temp ºC Time Seconds
NC AgPdPt 60/40 260 ± 5 15 max
NB Nickel Barrier 60/40 260 ± 5 30 ± 1
Case P/ND1D2D3D4D5
Size
0402 NB23 1.70 0.60 0.50 0.60 0.50
(.067) (.024) (.020) (.024) (.020)
0603 NB21 2.30 0.80 0.70 0.80 0.75
(.091) (.031) (.028) (0.31) (.030)
0805 NB12 3.00 1.00 1.00 1.00 1.25
(.118) (.039) (.039) (.039) (.049)
1206 NB20 4.00 1.00 2.00 1.00 2.50
(.157) (.039) (.079) (.039) (.098)
Case P/ND1D2D3D4D5
Size
0603 NB21 3.10 1.20 0.70 1.20 0.75
(.122) (.047) (.028) (.047) (.030)
0805 NB12 4.00 1.50 1.00 1.50 1.25
(.157) (.059) (.039) (.059) (.049)
1206 NB20 5.00 1.50 2.00 1.50 1.60
(.197) (.059) (.079) (.059) (.063)
Reflow
300
250
200
150
100
50
0
Solder Temp.
10 sec. max
1min
1min
(Minimize soldering time)
Natural
Cooling
220ºC
to
250ºC
Preheat
a) The visual standards used for evaluation of solder joints
will need to be modified as lead free joints are not as bright
as with tin-lead pastes and the fillet may not be as large.
b) Resin color may darken slightly due to the increase in
temperature required for the new pastes.
c) Lead-free solder pastes do not allow the same self align-
ment as lead containing systems. Standard mounting
pads are acceptable, but machine set up may need to be
modified.
300
250
200
150
100
50
00 50 100 150 200 250 300
• Pre-heating: 150°C ±15°C / 60-90s
• Max. Peak Gradient: 2.5°C/s
• Peak Temperature: 245°C ±5°C
• Time at >230°C: 40s Max.
Temperature °C
Time (s)
Wave
300
250
200
150
100
50
0
Solder Temp.
3 sec. max
1 to 2 min
(Preheat chips before soldering)
T/maximum 150°C
Preheat
Natural
Cooling
230ºC
to
250ºC
T
D1
D2
D3
D4
D5
RECOMMENDED
SOLDERING PAD
LAYOUT
Dimensions in
mm (inches)
19
High precision resistance and an outstanding ability to
reproduce the sensibility index B, make these ranges of
products the types of thermistors ideal for temperature
measurement applications.
Leaded or unleaded, these small size and rapid response
time thermistors are able to meet the most accurate
requirements.
Types NJ 28 NP 30 NI 24 NK 20
Finish Coated chip with phenolic Coated chip with epoxy Chip
resin + varnish Coated chip with epoxy AWG30 insulated leads
+ tinned copper wires + Silver plated nickel wires
Marking On packaging only
Operating temperature -55°C to +150°C
Tolerance on Rn (25°C) ±1%, ±2%, ±3%
Maximum dissipation at 25°C 0.16 W
Thermal dissipation factor* 3 mW/°C 3 mW/°C 2 mW/°C
Thermal time constant 8 s 8 s 6 s
Response time < 2 s
NTC Accurate Thermistors
NJ 28 – NI 24 – NK 20
TABLE OF VALUES
Types Rn at 25°C (Ω) Material Code B (K) ␣at 25°C (%/°C)
N_ _ _ KA 0202 2,000 KA 3625 ± 1% – 4.1
N_ _ _ MA 0302 3,000 MA 3960 ± 0.5% – 4.5
N_ _ _ MA 0502 5,000 MA 3960 ± 0.5% – 4.5
N_ _ _ MA 0103 10,000 MA 3960 ± 0.5% – 4.5
N_ _ _ NA 0103 10,000 NA 4100 ± 1% – 4.6
N_ _ _ PA 0203 20,000 PA 4235 ± 1% – 4.8
N_ _ _ QA 0503 50,000 QA 4250 ± 1% – 4.8
N_ _ _ RA 0104 100,000 RA 4380 ± 1% – 4.9
2.8 (.110) max 2.8 (.110) max
35 (1.38) min
3 (.118) max
0.4 (.016) +10 %
- 15%
2.4 (.094) max 2.4 (.094) max
35 (1.38) min
3 (.118) max
0.57 (.022) +7%
-7%
3.0 (.118) max 3.0 (.118) max
35 (1.38) min
3 (.118) max
0.4 (.016) +10%
-15%
0.75 (.030) ± 0.25 (.010)
1.75 (.069) ± 0.25 (0.10)
1.75 (.069)
± 0.25 (0.10)
HOW TO ORDER
NJ28
Type
MA
Material Code
MA
(See table above)
0502
Resistance
5 kΩ
F--
Tolerance
F (±1%)
* – = Add type as outlined above (Example NJ 2 8).
Resistance - Temperature characteristics: pages 29 to 33.
DIMENSIONS:
millimeters (inches)
20
NTC Thermistors Manufacturing Process
NJ 28 – NI 24 – NK 20
21
APPLICATIONS
• Commodity Product: 2 families
ND or NE : general purpose
NV : professional
• Alarm and temperature measurement application
• Temperature regulation application
• Level detection application
• Compensation application
TECHNOLOGY
• ND: epoxy-phenolic resin coating
NE: epoxy resin coating (recommended for severe
mounting conditions)
NV: epoxy varnish coating
• Leads: Radial copper wire tinned
• Marking: on package only for ND03 & NE03
ND/NE 06/09:Nominal resistance and tolerance for
±5%, ±10%
NV06/09: Nominal resistance and tolerance
• Delivery Mode: Bulk, reeled or ammopacked
PERFORMANCE CHARACTERISTICS
Typ e s General purpose Professional
ND03 or NE03 ND06 or NE06 ND09 or NE09 NV06 NV09
Climatic category 55/125/56-434 55/125/56-434
Operating Temperature –55 to +150°C –55 to +150°C –55 to +150°C –55 to +150°C –55 to +150°C
Tolerance on Rn 330Ω to 1MΩ : ± ±5%, ±10%, ±20% ±5%, ±10%, ±20% ±2%, ±5%, ±10% ±2%, ±5%, ±10%
(25°C) 5, 10, 20%
1500Ω to 150 kΩ : ±
3%
Maximum dissipation
at 25°C 0.25 W 0.71 W 0.9 W 0.69 W 0.85 W
Thermal dissipation
factor 5 mW/°C 7.1 mW/°C 9 mW/°C 6.9 mW/°C 8.5 mW/°C
Thermal time constant 10 s 22 s 30 s 18 s 30 s
Response time < 3s
STANDARDIZATION
NV range : approved by NFC 93271
Type: TN115 A for NV06
TN116 for NV09
List: GAM-T1
List: LNZ
OPTIONS
Consult factory for availability of options:
• other nominal resistance values
• other tolerances
• alternative lead materials or lengths
• controlled dimensions
Leaded Discs
N.03
N.06
N.09
NTC Disc Thermistors
ND 03/06/09 • NE 03/06/09 • NV 06/09
22
NTC Disc Thermistors
ND/NE 03
Part Number Rn at 25°C (Ω) Material Code B (K) ␣at 25°C (%/°C)
(ΔB/B )
N_03I00331 330
N_03I00471 470
I 3250 (1) – 3.7
N_03J00681 680
N_03J00102 1,000
J 3480 (2) – 3.9
N_03K00152 1,500
N_03K00222 2,200
K 3630 (2) – 4.0
N_03L00272 2,700 L 3790 (2) – 4.2
N_03L00332 3,300
N_03M00472 4,700
N_03M00682 6,800
M 3950 (2) – 4.4
N_03N00103 10,000
N_03N00153 15,000
N 4080 (2) – 4.6
N_03P00223 22,000
N_03P00333 33,000
P 4220 (2) – 4.7
N_03Q00473 47,000
N_03Q00683 68,000
Q 4300 (2) – 4.7
N_03R00104 100,000
N_03R00154 150,000
R 4400 (2) – 4.8
N_03S00224 220,000 S 4520 (2) – 5.0
N_03T00334 330,000
T 4630 (2) – 5.1
N_03T00474 470,000
N_03U00105 1,000,000 U 4840 (2) – 5.3
(1) ± 5%
(2) ± 3%
35 (1.38) min
3.5 (.138) max 3 (.118) max
ø 0.5 (.020)
+10%
-0.05
2.54 (0.1)
3 (.118) max
TABLE OF VALUES
ND03/NE03 TYPE
ND03/NE03
23
NTC Disc Thermistors
ND/NE/NV 06
Part Number Rn at 25°C (Ω) Material Code B (K) ␣at 25°C (%/°C)
(ΔB/B )
N_06J00151 150
N_06J00221 220
J 3480 (2) – 3.9
N_06K00331 330
N_06K00471 470
K 3630 (2) – 4.0
N_06L00681 680 L 3790 (2) – 4.2
N_06L00102 1,000
N_06M00152 1,500 M 3950 (2) – 4.4
N_06N00222 2,200
N_06N00332 3,300
N 4080 (2) – 4.6
N_06P00472 4,700
N_06P00682 6,800 P 4220 (2) – 4.7
N_06P00103 10,000
N_06Q00153 15,000
Q 4300 (2) – 4.7
N_06Q00223 22,000
N_06R00333 33,000 R 4400 (2) – 4.8
N_06S00473 47,000
S 4520 (2) – 5.0
N_06S00683 68,000
N_06T00104 100,000 T 4630 (2) – 5.1
N_06U00154 150,000
N_06U00224 220,000 U 4840 (2) – 5.3
N_06U00334 330,000
(1) ± 5%
(2) ± 3%
35 (1.38) min
6.3 (.248) max 3.5 (.138) max
ø 0.6 (.024)
+10%
-0.05
5.08 (0.2) 䉱
3 (.118) max
TABLE OF VALUES
ND06/NE06/NV06
NV06
35 (1.38) min
6.3 (.248) max 4 (.157) max
ø 0.6 (.024)
+10%
-0.05
5.08 (0.2) 䉱
3 (.118) max
ND06/NE06
For other resistance values, please consult us.
24
NTC Disc Thermistors
ND/NE/NV 09
TABLE OF VALUES
ND09/NE09/NV09
35 (.138) min
9.5 (.374) max 3.5 (.138) max
ø 0.6 (.024)
+10%
-0.05
5.08 (.02)
3 (.118) max
NV09
35 (.138) min
9.5 (.375) max 5 (.197) max
ø 0.6 (.024)
+10%
-0.05
5.08 (.02)
3 (.118) max
ND09/NE09
Part Number Rn at 25°C (Ω) Material Code B (K) ␣at 25°C (%/°C)
(ΔB/B )
N_09J00680 68
J 3480 (2) – 3.9
N_09J00101 100
N_09K00151 150
K 3630 (2) – 4.0
N_09K00221 220
N_09L00331 330 L 3790 (2) – 4.2
N_09M00471 470
M 3950 (2) – 4.4
N_09M00681 680
N_09N00102 1,000
N 4080 (2) – 4.6
N_09N00152 1,500
N_09P00222 2,200
N_09P00332 3,300
P 4220 (2) – 4.7
N_09Q00472 4,700
Q 4300 (2) – 4.7
N_09Q00682 6,800
N_09R00103 10,000 R 4400 (2) – 4.8
N_09R00153 15,000
N_09S00223 22,000 S 4520 (2) – 5.0
N_09T00333 33,000
T 4630 (2) – 5.1
N_09T00473 47,000
N_09U00683 68,000
N_09U00104 100,000 U 4840 (2) – 5.3
N_09U00154 150,000
(1) ± 5%
(2) ± 3%
25
Types Suffix H or Ho Leads Quantity/Size Packaging
ND/NE CA 16 ± 0.5 Straight 3000 AMMOPACK
03 (0.630 ± 0.020)
&CB 16 ± 0.5 Straight 3000 REEL
NJ28 (0.630 ± 0.020)
CC 19.5 ± 0.5 Straight 3000 AMMOPACK
(0.768 ± 0.020)
CD 19.5 ± 0.5 Straight 3000 REEL
(0.768 ± 0.020)
ND/NE/NV DA 16 ± 0.5 Straight 1500 AMMOPACK
06/09 (0.630 ± 0.020)
DB 16 ± 0.5 Straight 1500 REEL
(0.630 ± 0.020)
DC 19.5 ± 0.5 Straight 1500 AMMOPACK
(0.768 ± 0.020)
DD 19.5 ± 0.5 Straight 1500 REEL
(0.768 ± 0.020)
DL 16 ± 0.5 Kinked 1500 AMMOPACK
(0.630 ± 0.020)
DM 16 ± 0.5) Kinked 1500 REEL
(0.630 ± 0.020)
DN 19.5 ± 0.5 Kinked 1500 AMMOPACK
(0.768 ± 0.020)
DP 19.5 ± 0.5 Kinked 1500 REEL
(0.768 ± 0.020)
millimeters (inches)
Type Quantity/box
ND/NE03 3000
ND/NE06 1500
ND/NE09 1500
NV06 100
NV09 100
NI24
NJ28 1000
NK20
• Bulk
• Reel & Ammopack
HOW TO ORDER
ND06
Type
P0
Material Code
P
0103
Resistance
10 kΩ
K
Tolerance
K (±10%)
– –
Packaging
Bulk
NTC Disc Thermistors
Packaging for Automatic Insertion
H
2.54 (0.10)
H Ho
5.08 (0.20)
NTC
Typ e
ND03
NE03
NJ28
NTC
Typ es
ND/NE/NV
06/09
PACKAGING AND KINK SUFFIXES
Tables below indicate the suffixes to specify when ordering to
get the required kink and packaging. For devices on tape, it
is necessary to specify the height (H or Ho) which is the
distance between the tape axis (sprocket holes axis) and
the seating plane on the printed circuit board. The following
types can be ordered on tape either in AMMOPACK
(fan folder) or on REEL in accordance with IEC 286-2.
– Straight leads:
Hrepresents the distance between the sprocket holes axis
and the bottom plane of component body (base of resin or
base of stand off).
– Kinked leads and flat leads:
Ho represents the distance between the sprocket holes
axis and the base on the knee (kinked leads) or the bottom
of the flat part (flat leads).
26
⭋ 8 (.315)
30 (1.18)
Interlayer
Paper
42 (1.66)
Inside
48(1.99)
Outside
⭋ 31 (1.22)
⭋ 360 (14.2)
Automatic Insertion
NTC Disc Thermistors
TAPING CHARACTERISTICS
Missing components
A maximum of 3 consecutive components may be missing
from the bandolier, surrounded by at least 6 filled positions.
The number of missing components may not exceed 0.5%
of the total per packing module.
The beginning and the end of tape exhibit 8 or 9 blank
positions.
H
I
L
AMMOPACK REEL
LI H
330 (13.0) 46 (1.81) 290 (11.4)
hh
H1H1
H
P1
P0
P
d
W
E
t
AB
W2
W1
H0
E
I2
D0
p p
W0
A - B
Cross section
Direction of unreeling
Marking on
this side
Adhesive
tape
Reference plane
Value Tolerance Dimensions Characteristics
18 +1 / -0.5 W Leading tape width
6±0.3W
0Adhesive tape width
9 +0.75 / -0.5 W1Sprocket hole position
3 max. W2Distance between the top of the tape and
the adhesive
4±0.2D
0Diameter of sprocket hole
16/19.5 ±0.5 H0Distance between the tape axis and the
seating plane of the component
H1Distance between the tape axis and the top
of component body
Value Tolerance Dimensions Characteristics
12.7 ±0.2 P0Sprocket holes pitch
254 ±1 – Distance between 21 consecutive holes
20 pitches
0.7 ±0.2 t Total thickness of tape
2.54 5.08 +0.6 E Lead spacing
-0.1
5.08 3.85 ± 0.7 P1
Distance between the sprocket hole axis
and the lead axis
12.7 ±1.0 P Spacing of components
0.5 0.6 ±5% d Lead diameter
0±1.3
3P Verticality of components
0±2
3h Alignment of components
DIMENSIONS: millimeters (inches)
27
NTC Leadless Disc Thermistors
Typ es NR
Marking On package only / On parts upon request
Operating temperature -40°C to +200°C
Custom - designed products defined with:
Values and tolerances D ± ΔDR
1± ΔR1/R1 at T1
E ± ΔE R2± ΔR2/R2at T2, . . .
DESIGN OF THE THERMISTOR
Choice of the resistances
If the application is to measure the temperature around a
defined point, a unique nominal resistance can be chosen
(for example, among standard values of the ND range prod-
ucts presented on pages 20 to 24).
When it is required to measure the temperature over selected
ranges T1–T2, T2–T3, ..., the corresponding resistance
R1, R2, R3, ..., must be such that they can be located
on the R (T) characteristic of an existing NTC material
(for example among standard materials whose R (T) are
displayed on pages 29 to 33).
The resistances must also be compatible with the resistivity
of the material and the dimensions of the thermistor.
Choice of the tolerances
The precision of the temperature measurement determines
the calculation of the tolerance on the resistance:
⌬R/R = ␣(%/°C). ⌬T (°C)
For example, the NTC NR55--3049-99, using “N5” material
(R (T) characteristic displayed on page 31), requires a preci-
sion of 1°C over the temperature range 110°C - 120°C.
The tolerances can be calculated:
⌬R110°C /R110°C = 1°C* 2.91%/°C = 2.91%
⌬R120°C /R120°C = 1°C* 2.76%/°C = 2.76%
*For your specific requirements, please consult us.
D
Metallization
E
Physical data (dim. in mm)
HOW TO ORDER
NR55 -
Type
- 3002 - 99
P/N Code
This type of product is widely used in automotive and
consumer applications.
They are assembled in custom-probes for sensing the
temperature of liquids (water, oil, ...), gases or surface of any
other component.
The metallization covers completely the surfaces of the
thermistor.
The particularly flat and smooth surfaces ensure an excellent
electrical and thermal contact under pressure.
28
NTC Leadless Disc Thermistors
Typ e s D E Material B R1± ⌬R1T1R2± ⌬R2T2R3± ⌬R3T3
Code (k) at T1(°C) at T2(°C) at T3(°C)
NR 55 -- 3002 - 99 5.5 (.217) ± 0.5 (.020) 1.1 (.043) ± 0.4 (.016) N5 4160 1230 Ω± 7.5% 40 160 Ω± 5% 96.5 – –
NR 67 -- 3068 - 99 6.7 (.264) ± 0.5 (.020) 1.7 (.067) ± 0.3 (.012) N 4080 150 Ω± 3.3% 100 51 Ω± 5.3% 140 – –
NR 55 -- 3049 - 99 5.5 (.217) ± 0.5 (.020) 1.0 (.040) ± 0.2 (.008) N5 4160 107 Ω ± 2.9% 110 80.6 Ω± 2.8% 120 – –
NR 55 -- 3046 - 99 5.5 (.217) ± 0.5 (.020) 1.3 (.051) ± 0.4 (.016) S 4520 48600 Ω± 7.5% 25 3210 Ω± 5% 90 – –
NR 49 -- 3119 - 99 4.9 (.193) ± 0.3 (.012) 1.5 (.060) ± 0.4 (.016) M 3950 840 Ω± 10% 37.8 84 Ω± 5% 104.4 – –
NR 55 -- 3114 - 99 5.5 (.217) ± 0.4 (.016) 1.0 (.040) ± 0.2 (.008) P 4220 5000 Ω± 10% 25 – – – –
NR 70 -- 3121 - 99 7.0 (.275) ± 0.3 (.012) 1.2 (.047) ± 0.2 (.008) L 3790 210 Ω± 10% 40 40 Ω± 7.5% 90 30 Ω± 6.7% 100
NR 29 -- 3107 - 99 2.9 (.014) ± 0.3 (.012) 1.7 (.067) ± 0.3 (.012) K 3630 2050 Ω± 6% 25 193 Ω± 5.4% 96.5 – –
NR 55 -- 3122 - 99 5.5 (.217) ± 0.5 (.020) 1.5 (.060) ± 0.4 (.016) J 3480 210 Ω± 5% 25 – – – –
NR 55 -- 3126 - 99 5.5 (.217) ± 0.5 (.020) 1.0 (.040) ± 0.2 (.008) P 4220 3340 Ω± 10% 25 264 Ω± 7% 90 107 Ω± 7% 120
NR 47 -- 3116 - 99 4.7 (.185) ± 0.4 (.016) 1.2 (.047) ± 0.2 (.008) R 4400 33000 Ω± 2% 25 – – – –
NR 49 -- 3113 - 99 4.9 (.193) ± 0.3 (.012) 1.2 (.047) ± 0.2 (.008) N 4080 1680 Ω± 10% 40 382 Ω± 6.7% 80 176 Ω± 5% 105
NR 47 -- 3101 - 99 4.6 (.181) ± 0.3 (.012) 1.4 (.055) ± 0.3 (.012) J 3480 146 Ω± 13% 40 22 Ω± 10% 100 – –
NR 55 -- 3071 - 99 5.8 (.228) ± 0.3 (.012) 1.0 (.040) ± 0.2 (.008) L 3790 262 Ω± 8.7% 40 120 Ω± 10% 60 35.5 Ω± 7.8% 100
NR 61 -- 3063 - 99 6.1 (.240) ± 0.3 (.012) 1.5 (.060) ± 0.3 (.012) N 4080 760 Ω± 9.2% 50 130 Ω± 8.5% 100 56.6 Ω± 8.5% 130
NR 67 -- 3053 - 99 6.7 (.264) ± 0.4 (.016) 1.7 (.067) ± 0.3 (.012) N 4080 540 Ω± 11% 60 144 Ω± 7% 100 – –
NR 50 -- 3048 - 99 5.0 (.197) ± 0.5 (.020) 1.5 (.060) ± 0.5 (.020) J 3480 233 Ω± 10% 25 13.3 Ω± 7% 121 – –
NR 60 -- 3021 - 99 6.0 (.236) ± 0.5 (.020) 3.2 (.125) ± 0.3 (.012) P 4220 3640 Ω± 3% 40 457 Ω± 3% 96.5 – –
NR 55 -- 3016 - 99 5.5 (.217) ± 0.5 (.020) 1.1 (.043) ± 0.4 (.016) Q 4300 5500 Ω± 9% 40 650 Ω± 7.7% 96.5 – –
We present below some examples of our custom - designed
products as an illustration of the different ways to define
products.
Resistance - Temperature characteristics: pages 29 to 33.
DIMENSIONS: millimeters (inches)
29
Material code B (K)
T I 3250 J-J5 3480 K 3630 T
(°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) (°C)
- 55 42.35 21.9 - 5.98 51.74 20.5 - 6.43 56.26 21.4 - 6.46 - 55
- 50 31.48 20.0 - 5.78 37.97 17.7 - 6.21 41.21 18.5 - 6.26 - 50
- 45 23.63 18.1 - 5.59 28.15 15.2 - 6.01 30.47 15.9 - 6.06 - 45
- 40 17.91 16.3 - 5.41 21.07 13.0 - 5.81 22.73 13.6 - 5.88 - 40
- 35 13.70 14.6 - 5.23 15.91 11.0 - 5.62 17.11 11.5 - 5.70 - 35
- 30 10.58 13.1 - 5.06 12.13 9.3 - 5.44 12.98 9.7 - 5.53 - 30
- 25 8.232 11.6 - 4.90 9.320 7.8 - 5.26 9.930 8.1 - 5.36 - 25
- 20 6.460 10.1 - 4.74 7.221 6.4 - 5.10 7.654 6.7 - 5.21 - 20
- 15 5.110 8.8 - 4.59 5.640 5.2 - 4.94 5.945 5.4 - 5.05 - 15
- 10 4.072 7.5 - 4.45 4.438 4.2 - 4.78 4.650 4.4 - 4.91 - 10
- 5 3.268 6.3 - 4.31 3.517 3.3 - 4.64 3.663 3.4 - 4.76 - 5
0 2.641 5.1 - 4.18 2.807 2.5 - 4.50 2.905 2.6 - 4.63 0
5 2.148 4.0 - 4.05 2.255 1.8 - 4.36 2.319 1.9 - 4.50 5
10 1.759 2.9 - 3.92 1.824 1.2 - 4.23 1.862 1.3 - 4.37 10
15 1.449 1.9 - 3.81 1.484 0.7 - 4.10 1.505 0.8 - 4.25 15
20 1.200 0.9 - 3.69 1.215 0.3 - 3.98 1.223 0.3 - 4.13 20
25 1.000 0.0 - 3.58 1.0000 0.0 - 3.87 1.0000 0.0 - 4.01 25
30 .8377 0.9 - 3.48 .8278 0.3 - 3.76 .8219 0.3 - 3.90 30
35 .7054 1.8 - 3.38 .6889 0.7 - 3.65 .6792 0.7 - 3.80 35
40 .5969 2.6 - 3.28 .5763 1.1 - 3.55 .5641 1.1 - 3.69 40
45 .5076 3.5 - 3.19 .4845 1.5 - 3.45 .4708 1.6 - 3.59 45
50 .4336 4.3 - 3.10 .4092 2.0 - 3.35 .3949 2.1 - 3.50 50
55 .3720 5.1 - 3.01 .3473 2.5 - 3.26 .3327 2.6 - 3.41 55
60 .3206 5.9 - 2.93 .2960 3.0 - 3.17 .2816 3.1 - 3.32 60
65 .2774 6.6 - 2.85 .2534 3.5 - 3.09 .2393 3.7 - 3.23 65
70 .2410 7.4 - 2.77 .2178 4.1 - 3.01 .2043 4.3 - 3.14 70
75 .2102 8.1 - 2.70 .1879 4.7 - 2.93 .1751 4.9 - 3.06 75
80 .1839 8.8 - 2.63 .1628 5.3 - 2.85 .1507 5.5 - 2.99 80
85 .1616 9.5 - 2.56 .1415 5.9 - 2.78 .1301 6.1 - 2.91 85
90 .1424 10.2 - 2.49 .1235 6.5 - 2.70 .1128 6.8 - 2.84 90
95 .1259 10.9 - 2.43 .1081 7.1 - 2.64 .09812 7.4 - 2.77 95
100 .1117 11.5 - 2.36 .09500 7.7 - 2.57 .08565 8.1 - 2.70 100
105 .09938 12.2 - 2.30 .08373 8.4 - 2.50 .07502 8.7 - 2.63 105
110 .08869 12.8 - 2.25 .07403 9.0 - 2.44 .06592 9.4 - 2.57 110
115 .07938 13.4 - 2.19 .06565 9.7 - 2.38 .05810 10.1 - 2.50 115
120 .07124 14.0 - 2.14 .05838 10.3 - 2.33 .05137 10.8 - 2.44 120
125 .06410 14.6 - 2.08 .05207 11.0 - 2.27 .04555 11.5 - 2.39 125
130 .05783 15.2 - 2.03 .04567 11.6 - 2.22 .04050 12.2 - 2.33 130
135 .05230 15.7 - 1.98 .04175 12.3 - 2.16 .03611 12.8 - 2.27 135
140 .04741 16.3 - 1.94 .03753 13.0 - 2.11 .03229 13.5 - 2.22 140
145 .04308 16.8 - 1.89 .03382 13.6 - 2.06 .02894 14.2 - 2.17 145
150 .03924 17.4 - 1.85 .03055 14.3 - 2.02 .02600 14.9 - 2.12 150
Tables of Resistance vs Temperature
Material code B (K)
T KA 3625 KC 3470 L 3790 T
(°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) (°C)
-55 61.21 7.1 - 6.77 60.08 34.0 - 7.00 82.52 22.3 - 7.38 -55
-50 44.24 6.1 - 6.53 43.19 29.4 - 6.71 58.01 19.3 - 7.11 -50
-45 32.33 5.3 - 6.30 31.42 25.3 - 6.44 41.30 16.6 - 6.84 -45
-40 23.88 4.5 - 6.08 23.13 21.6 - 6.18 29.75 14.2 - 6.60 -40
-35 17.81 3.8 - 5.88 17.22 18.4 - 5.94 21.67 12.0 - 6.36 -35
-30 13.41 3.2 - 5.68 12.95 15.5 - 5.71 15.96 10.1 - 6.13 -30
-25 10.19 2.7 - 5.49 9.842 12.9 - 5.49 11.88 8.5 - 5.92 -25
-20 7.814 2.2 - 5.31 7.550 10.7 - 5.29 8.930 7.0 - 5.72 -20
-15 6.040 1.8 - 5.14 5.845 8.7 - 5.10 6.776 5.7 - 5.32 -15
-10 4.707 1.5 - 4.98 4.564 6.9 - 4.91 5.188 4.5 - 5.34 -10
-5 3.696 1.1 - 4.83 3.594 5.4 - 4.74 4.007 3.6 - 5.16 -5
0 2.923 .9 - 4.68 2.853 4.1 - 4.58 3.120 2.7 - 4.99 0
5 2.329 .6 - 4.53 2.281 3.0 - 4.42 2.449 2.0 - 4.83 5
10 1.867 .4 - 4.40 1.838 2.0 - 4.27 1.937 1.3 - 4.68 10
15 1.507 .3 - 4.27 1.491 1.2 - 4.13 1.543 .8 - 4.53 15
20 1.224 .1 - 4.14 1.217 0.5 - 4.00 1.238 .4 - 4.39 20
25 1.0000 0.0 - 4.02 1.0000 0.0 - 3.90 1.0000 0.0 - 4.25 25
30 .8217 .1 - 3.91 .8267 0.5 - 3.74 .8129 .3 - 4.12 30
35 .6788 .2 - 3.80 .6873 1.1 - 3.63 .6648 .7 - 4.00 35
40 .5638 .4 - 3.69 .5747 1.8 - 3.52 .5409 1.2 - 3.88 40
45 .4707 .5 - 3.59 .4830 2.5 - 3.41 .4525 1.6 - 3.77 45
50 .3948 .7 - 3.49 .4081 3.3 - 3.31 .3765 2.2 - 3.66 50
55 .3328 .9 - 3.40 .3465 4.1 - 3.21 .3148 2.7 - 3.55 55
60 .2818 1.0 - 3.31 .2955 5.0 - 3.12 .2646 3.3 - 3.45 60
65 .2396 1.2 - 3.22 .2532 5.9 - 3.03 .2235 3.8 - 3.36 65
70 .2046 1.4 - 3.14 .2179 6.8 - 2.94 .1896 4.5 - 3.26 70
75 .1754 1.6 - 3.06 .1883 7.8 - 2.86 .1616 5.1 - 3.17 75
80 .1510 1.8 - 2.98 .1634 8.7 - 2.78 .1383 5.7 - 3.09 80
85 .1305 2.0 - 2.90 .1423 9.7 - 2.71 .1189 6.4 - 3.00 85
90 .1131 2.3 - 2.83 .12441 10.8 - 2.63 .1026 7.1 - 2.92 90
95 .09846 2.5 - 2.76 .10915 11.8 - 2.56 .08889 7.7 - 2.85 95
100 .08597 2.7 - 2.69 .09608 12.9 - 2.50 .07729 8.4 - 2.77 100
105 .07531 2.9 - 2.63 .08486 13.9 - 2.43 .06745 9.1 - 2.70 105
110 .06618 3.1 - 2.56 .07519 15.0 - 2.37 .05906 9.8 - 2.63 110
115 .05834 3.4 - 2.50 .06683 16.1 - 2.31 .05189 10.5 - 2.57 115
120 .05158 3.6 - 2.44 .05957 17.2 - 2.25 .04573 11.3 - 2.50 120
125 .04573 3.8 - 2.39 .05325 18.3 - 2.20 .04043 12.0 - 2.44 125
130 .04066 4.0 - 2.33 .04774 19.4 - 2.14 .03585 12.7 - 2.38 130
135 .03625 4.3 - 2.28 .04290 20.5 - 2.09 .03188 13.4 - 2.33 135
140 .03240 4.5 - 2.23 .03866 21.6 - 2.04 .02843 14.1 - 2.27 140
145 .02903 4.7 - 2.18 .03492 22.7 - 1.99 .02543 14.8 - 2.22 145
150 .02608 5.0 - 2.13 .03162 23.8 - 1.95 .02279 15.6 - 2.17 150
30
Tables of Resistance vs Temperature
Material code B (K)
T L2 3805 M 3950 MA 3960 T
(°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) (°C)
- 55 62.45 22.4 - 6.4 99.56 23.2 - 7.71 104.2 3.9 - 7.89 - 55
- 50 45.40 19.3 - 6.2 68.95 20.1 - 7.42 71.63 3.4 - 7.57 - 50
- 45 33.33 16.6 - 6.0 48.38 17.3 - 7.15 49.94 2.9 - 7.28 - 45
- 40 24.70 14.2 - 5.9 34.37 14.8 - 6.89 35.28 2.5 - 7.00 - 40
- 35 18.47 12.1 - 5.7 24.71 12.5 - 6.64 25.25 2.1 - 6.73 - 35
- 30 13.92 10.2 - 5.5 17.96 10.6 - 6.41 18.28 1.8 - 6.48 - 30
- 25 10.58 8.5 - 5.4 13.20 8.8 - 6.18 13.39 1.5 - 6.25 - 25
- 20 8.110 7.0 - 5.2 9.803 7.3 - 5.97 9.917 1.2 - 6.02 - 20
- 15 6.260 5.7 - 5.1 7.351 5.9 - 5.77 7.419 1.0 - 5.81 - 15
- 10 4.867 4.6 - 4.9 5.585 4.7 - 5.57 5.605 .8 - 5.61 - 10
- 5 3.810 3.6 - 4.8 4.251 3.7 - 5.39 4.275 .6 - 5.42 - 5
0 3.003 2.7 - 4.7 3.275 2.8 - 5.21 3.289 .5 - 5.24 0
5 2.382 2.0 - 4.5 2.544 2.0 - 5.04 2.552 .3 - 5.06 5
10 1.901 1.3 - 4.4 1.992 1.4 - 4.88 1.997 .2 - 4.90 10
15 1.526 0.8 - 4.3 1.572 .8 - 4.73 1.574 .1 - 4.74 15
20 1.232 0.4 - 4.2 1.249 .4 - 4.58 1.250 .1 - 4.59 20
25 1.0000 0.0 - 4.1 1.0000 0.0 - 4.44 1.0000 0.0 - 4.45 25
30 .8161 0.3 - 4.0 .8057 .4 - 4.30 .8053 .1 - 4.31 30
35 .6694 0.7 - 3.9 .6534 .8 - 4.17 .6527 .1 - 4.18 35
40 .5518 1.2 - 3.8 .5331 1.2 - 4.05 .5323 .2 - 4.06 40
45 .4570 1.7 - 3.7 .4376 1.7 - 3.93 .4367 .3 - 3.94 45
50 .3802 2.2 - 3.6 .3612 2.2 -3.81 .3604 .4 - 3.82 50
55 .3178 2.7 - 3.5 .2998 2.8 - 3.71 .2990 .5 - 3.71 55
60 .2667 3.3 - 3.5 .2501 3.4 - 3.60 .2493 .6 - 3.61 60
65 .2248 3.9 - 3.4 .2097 4.0 - 3.50 .2090 .7 - 3.51 65
70 .1902 4.5 - 3.3 .1767 4.6 - 3.40 .1760 .8 - 3.41 70
75 .1615 5.1 - 3.2 .1496 5.3 - 3.31 .1489 .9 - 3.32 75
80 .1377 5.8 - 3.1 .1272 6.0 - 3.22 .1266 1.0 - 3.23 80
85 .1179 6.4 - 3.1 .1087 6.7 - 3.13 .1081 1.1 - 3.14 85
90 .1012 7.1 - 3.0 .09321 7.4 - 3.05 .09262 1.2 - 3.06 90
95 .08721 7.8 - 2.9 .08027 8.1 - 2.97 .07970 1.3 - 2.98 95
100 .07539 8.5 - 2.9 .06939 8.8 - 2.89 .06885 1.5 - 2.91 100
105 .06538 9.2 - 2.8 .06020 9.5 - 2.82 .05969 1.6 - 2.83 105
110 .05688 9.9 - 2.8 .05243 10.2 - 2.75 .05194 1.7 - 2.76 110
115 .04963 10.6 - 2.7 .04581 11.0 - 2.68 .04535 1.8 - 2.69 115
120 .04343 11.3 - 2.6 .04017 11.7 - 2.61 .03973 2.0 - 2.63 120
125 .03812 12.0 - 2.6 .03533 12.5 - 2.55 .03491 2.1 - 2.56 125
130 .03354 12.7 - 2.5 .03117 13.2 - 2.48 .03077 2.2 - 2.50 130
135 .02960 13.5 - 2.5 .02759 14.0 - 2.42 .02721 2.3 - 2.44 135
140 .02618 14.2 - 2.4 .02449 14.7 - 2.37 .02412 2.5 - 2.39 140
145 .02322 14.9 - 2.4 .02180 15.5 - 2.31 .02145 2.6 - 2.33 145
150 .02064 15.6 - 2.3 .01945 16.2 - 2.26 .01912 2.7 - 2.28 150
Material code B (K)
T MC 3910 N 4080 NA 4100 T
(°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) (°C)
-55 100.6 23.0 - 7.88 110.1 24.0 - 7.81 109.5 8.0 - 7.83 -55
-50 69.29 19.9 - 7.55 75.90 20.7 - 7.53 75.42 6.9 - 7.54 -50
-45 48.41 17.1 - 7.24 52.98 17.8 - 7.26 52.63 6.0 - 7.27 -45
-40 34.27 14.6 - 6.96 37.43 15.2 - 7.01 37.18 5.1 - 7.01 -40
-35 24.57 12.4 - 6.68 26.75 12.9 - 6.77 26.58 4.3 - 6.76 -35
-30 17.83 10.5 - 6.42 19.33 10.9 - 6.54 19.22 3.7 - 6.52 -30
-25 13.09 8.7 - 6.18 14.12 9.1 - 6.32 14.04 3.1 - 6.30 -25
-20 9.714 7.2 - 5.95 10.41 7.5 - 6.10 10.37 2.5 - 6.09 -20
-15 7.283 5.9 - 5.73 7.758 6.1 - 5.90 7.730 2.1 - 5.89 -15
-10 5.515 4.7 - 5.53 5.834 4.9 - 5.71 5.817 1.6 - 5.70 -10
-5 4.215 3.7 - 5.33 4.426 3.8 - 5.53 4.416 1.3 - 5.51 -5
0 3.251 2.8 - 5.15 3.387 2.9 - 5.35 3.382 1.0 - 5.34 0
5 2.528 2.0 - 4.97 2.614 2.1 - 5.18 2.611 .7 - 5.17 5
10 1.983 1.4 - 4.80 2.033 1.4 - 5.02 2.032 .5 - 5.01 10
15 1.567 0.8 - 4.65 1.593 .9 - 4.87 1.593 .3 - 4.86 15
20 1.247 0.4 - 4.49 1.258 .4 - 4.72 1.258 .1 - 4.71 20
25 1.0000 0.0 - 4.40 1.0000 0.0 - 4.57 1.0000 0.0 - 4.57 25
30 .8072 0.4 - 4.21 .8004 .4 - 4.44 .8004 .1 - 4.44 30
35 .6558 0.8 - 4.08 .6448 .8 - 4.31 .6446 .3 - 4.31 35
40 .5361 1.2 - 3.96 .5228 1.3 - 4.18 .5224 .4 - 4.19 40
45 .4409 1.7 - 3.84 .4264 1.8 - 4.06 .4258 .6 - 4.07 45
50 .3647 2.2 - 3.72 .3497 2.3 - 3.94 .3491 .8 - 3.96 50
55 .3033 2.8 - 3.61 .2885 2.9 - 3.83 .2877 1.0 - 3.85 55
60 .2535 3.4 - 3.51 .2392 3.5 - 3.72 .2383 1.2 - 3.74 60
65 .2130 4.0 - 3.41 .1994 4.1 - 3.62 .1984 1.4 - 3.64 65
70 .1798 4.6 - 3.31 .1671 4.8 - 3.52 .1660 1.6 - 3.55 70
75 .1525 5.2 - 3.22 .1406 5.5 - 3.42 .1396 1.8 - 3.45 75
80 .1299 5.9 - 3.13 .1189 6.2 - 3.33 .1178 2.1 - 3.36 80
85 .1112 6.6 - 3.05 .1010 6.9 - 3.24 .09991 2.3 - 3.28 85
90 .09551 7.3 - 2.97 .08617 7.6 - 3.16 .08507 2.5 - 3.20 90
95 .08238 8.0 - 2.89 .07381 8.3 - 3.07 .07273 2.8 - 3.12 95
100 .07132 8.7 - 2.81 .06347 9.1 - 2.99 .06241 3.0 - 3.04 100
105 .06198 9.4 - 2.74 .05480 9.8 - 2.92 .05376 3.3 - 2.96 105
110 .05405 10.1 - 2.67 .04148 10.6 - 2.84 .04648 3.5 - 2.89 110
115 .04730 10.9 - 2.60 .04129 11.3 - 2.77 .04032 3.8 - 2.82 115
120 .04153 11.6 - 2.54 .03603 12.1 - 2.70 .03510 4.1 - 2.76 120
125 .03657 12.3 - 2.48 .03155 12.9 - 2.64 .03065 4.3 - 2.69 125
130 .03231 13.1 - 2.42 .02771 13.7 - 2.57 .02685 4.6 - 2.63 130
135 .02863 13.8 - 2.36 .02442 14.4 - 2.51 .02359 4.8 - 2.57 135
140 .02544 14.6 - 2.30 .02158 15.2 - 2.45 .02079 5.1 - 2.51 140
145 .02267 15.3 - 2.25 .01913 16.0 - 2.39 .01838 5.4 - 2.45 145
150 .02025 16.1 - 2.20 .01700 16.8 - 2.34 .01629 5.6 - 2.40 150
31
Material code B (K)
T P 4220 PA 4235 Q 4300 T
(°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) (°C)
- 55 121.3 24.8 - 7.88 23.3 8.3 - 8.00 98.02 25.5 - 7.14 - 55
- 50 83.32 21.4 - 7.61 84.31 7.2 - 7.71 69.51 22.0 - 6.95 - 50
- 45 57.91 18.4 - 7.36 58.37 6.2 - 7.43 49.72 18.9 - 6.77 - 45
- 40 40.71 15.8 - 7.11 40.92 5.3 -7.17 35.86 16.2 - 6.59 - 40
- 35 28.95 13.4 - 6.88 29.03 4.5 - 6.92 26.08 13.7 - 6.42 - 35
- 30 20.80 11.3 - 6.66 20.83 3.8 - 6.69 19.12 11.6 - 6.26 - 30
- 25 15.10 9.4 - 6.44 15.10 3.2 - 6.46 14.12 9.7 - 6.10 - 25
- 20 11.07 7.8 - 6.24 11.07 2.6 - 6.25 10.51 8.0 - 5.94 - 20
- 15 8.196 6.3 - 6.04 8.189 2.1 - 6.05 7.876 6.5 - 5.79 - 15
- 10 6.123 5.1 - 5.85 6.117 1.7 - 5.85 5.946 5.2 - 5.64 - 10
- 5 4.615 4.0 - 5.67 4.610 1.3 - 5.67 4.520 4.1 - 5.50 - 5
0 3.507 3.0 - 5.49 3.504 1.0 - 5.49 3.460 3.1 - 5.36 0
5 2.688 2.2 - 5.33 2.686 .7 - 5.32 2.666 2.2 - 5.23 5
10 2.078 1.5 - 5.16 2.075 .5 - 5.16 2.067 1.5 - 5.09 10
15 1.616 .9 - 5.01 1.615 .3 - 5.01 1.613 .9 - 4.96 15
20 1.267 .4 - 4.86 1.266 .1 - 4.86 1.266 .4 - 4.84 20
25 1.0000 0.0 - 4.72 1.0000 0.0 - 4.72 1.0000 0.0 - 4.72 25
30 .7949 .4 - 4.58 .7949 .1 - 4.58 .7944 .4 - 4.60 30
35 .6360 .8 - 4.45 .6359 .3 - 4.45 .6347 .8 - 4.48 35
40 .5120 1.3 - 4.32 .5119 .4 - 4.32 .5099 1.3 - 4.37 40
45 .4148 1.8 - 4.20 .4145 .6 - 4.20 .4119 1.9 - 4.26 45
50 .3380 2.4 - 4.06 .3376 .8 - 4.09 .3345 2.5 - 4.15 50
55 .2769 3.0 - 3.96 .2765 1.0 - 3.98 .2730 3.1 - 4.05 55
60 .2282 3.6 - 3.86 .2276 1.2 - 3.87 .2239 3.7 - 3.95 60
65 .1890 4.3 - 3.75 .1883 1.4 - 3.77 .1846 4.4 - 3.85 65
70 .1573 5.0 - 3.65 .1566 1.7 - 3.67 .1529 5.1 - 3.75 70
75 .1316 5.7 - 3.55 .1308 1.9 - 3.58 .1272 5.8 - 3.66 75
80 .1106 6.4 - 3.45 .1098 2.1 - 3.48 .1063 6.5 - 3.57 80
85 .09338 7.1 - 3.36 .09258 2.4 - 3.40 .08928 7.3 - 3.48 85
90 .07919 7.9 - 3.28 .07838 2.6 - 3.31 .07527 8.1 - 3.39 90
95 .06744 8.6 - 3.19 .06662 2.9 - 3.23 .06373 8.8 - 3.31 95
100 .05767 9.4 - 3.11 .05686 3.1 - 3.15 .05417 9.6 - 3.23 100
105 .04951 10.2 - 3.03 .04871 3.4 - 3.07 .04623 10.4 - 3.15 105
110 .04267 10.9 - 2.95 .04189 3.7 - 3.00 .03961 11.2 - 3.07 110
115 .03691 11.7 - 2.88 .03614 3.9 - 2.93 .03405 12.0 - 3.00 115
120 .03204 12.5 - 2.81 .03130 4.2 - 2.86 .02939 12.9 - 2.93 120
125 .02791 13.3 - 2.74 .02719 4.5 - 2.79 .02545 13.7 - 2.86 125
130 .02440 14.1 - 2.67 .02370 4.7 - 2.73 .02211 14.5 - 2.79 130
135 .02139 14.9 - 2.61 .02072 5.0 - 2.67 .01928 15.3 - 2.72 135
140 .01882 15.7 - 2.55 .01817 5.3 - 2.61 .01686 16.1 - 2.66 140
145 .01660 16.5 - 2.49 .01598 5.5 - 2.55 .01479 17.0 - 2.60 145
150 .01469 17.3 - 2.43 .01410 5.8 - 2.49 .01302 17.8 - 2.54 150
Material code B (K)
T NC 4080 NE 4100 N5 T
(°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) (°C)
- 55 105.44 24.0 - 7.5 97.27 24.1 - 7.2 115.8 16.3 - 7.83 - 55
- 50 72.89 20.7 - 7.2 67.99 20.8 - 7.0 79.70 14.1 - 7.56 - 50
- 45 51.04 17.8 - 7.0 48.08 17.9 - 6.8 55.53 12.1 - 7.30 - 45
- 40 36.18 15.2 - 6.7 34.39 15.3 - 6.5 39.14 10.4 - 7.06 - 40
- 35 25.94 12.9 - 6.5 24.85 13.0 - 6.3 27.90 8.8 - 6.82 - 35
- 30 18.81 10.9 - 6.3 18.15 11.0 - 6.1 20.11 7.4 - 6.60 - 30
- 25 13.78 9.1 - 6.1 13.38 9.2 - 6.0 14.64 6.2 - 6.38 - 25
- 20 10.20 7.5 - 5.9 9.96 7.6 - 5.8 10.77 5.1 - 6.17 - 20
- 15 7.621 6.1 - 5.7 7.479 6.2 - 5.6 7.995 4.2 - 5.97 - 15
- 10 5.748 4.9 - 5.5 5.664 4.9 - 5.4 5.991 3.3 - 5.78 - 10
- 5 4.373 3.8 - 5.4 4.325 3.8 - 5.3 4.529 2.6 - 5.60 - 5
0 3.355 2.9 - 5.2 3.328 2.9 - 5.1 3.453 2.0 - 5.43 0
5 2.595 2.1 - 5.0 2.581 2.1 - 5.0 2.655 1.4 - 5.26 5
10 2.023 1.4 - 4.9 2.016 1.4 - 4.9 2.057 1.0 - 5.10 10
15 1.588 0.9 - 4.7 1.585 0.9 - 4.7 1.606 .6 - 4.95 15
20 1.256 0.4 - 4.6 1.255 0.4 - 4.6 1.263 .3 - 4.80 20
25 1.0000 0.0 - 4.5 1.0000 0.0 - 4.5 1.0000 0.0 - 4.65 25
30 .8014 0.4 - 4.4 .8017 0.4 - 4.3 .7973 .3 - 4.52 30
35 .6463 0.8 - 4.2 .6466 0.8 - 4.2 .6398 .5 - 4.39 35
40 .5243 1.3 - 4.1 .5245 1.3 - 4.1 .5167 .9 - 4.26 40
45 .4278 1.8 - 4.0 .4278 1.8 - 4.0 .4198 1.2 - 4.14 45
50 .3510 2.3 - 3.9 .3508 2.3 - 3.9 .3430 1.6 - 4.02 50
55 .2896 2.9 - 3.8 .2891 2.9 - 3.8 .2819 2.0 - 3.91 55
60 .2401 3.5 - 3.7 .2394 3.5 - 3.7 .2329 2.4 - 3.80 60
65 .2001 4.1 - 3.6 .1992 4.2 - 3.6 .1934 2.8 - 3.69 65
70 .1675 4.8 - 3.5 .1666 4.8 - 3.5 .1615 3.3 - 3.59 70
75 .1409 5.5 - 3.4 .1399 5.5 - 3.4 .1354 3.7 - 3.50 75
80 .1190 6.2 - 3.3 .11794 6.2 - 3.4 .1141 4.2 - 3.40 80
85 .1010 6.9 - 3.2 .09987 6.9 - 3.3 .09660 4.7 - 3.31 85
90 .08605 7.6 - 3.2 .08491 7.6 - 3.2 .08212 5.2 - 3.23 90
95 .07360 8.3 - 3.1 .07246 8.4 - 3.1 .07011 5.7 - 3.14 95
100 .06319 9.1 - 3.0 .06207 9.1 - 3.1 .06010 6.2 - 3.06 100
105 .05446 9.8 - 2.9 .05336 9.9 -3.0 .05172 6.7 - 2.98 105
110 .04710 10.6 - 2.9 .04604 10.6 - 2.9 .04467 7.2 - 2.91 110
115 .04087 11.3 - 2.8 .03985 11.4 - 2.8 .03873 7.7 - 2.83 115
120 .03559 12.1 - 2.7 .03461 12.2 - 2.8 .03370 8.2 - 2.76 120
125 .03109 12.9 - 2.7 .03015 12.9 -2.7 .02942 8.8 - 2.70 125
130 .02724 13.7 - 2.6 .02635 13.7 - 2.7 .02576 9.3 - 2.63 130
135 .02394 14.4 - 2.5 .02309 14.5 - 2.6 .02264 9.8 - 2.57 135
140 .02111 15.2 - 2.5 .02030 15.3 - 2.5 .01995 10.3 - 2.51 140
145 .01866 16.0 - 2.4 .01789 16.1 - 2.5 .01764 10.9 - 2.45 145
150 .01654 16.8 - 2.4 .01581 16.8 - 2.4 .01564 11.4 - 2.39 150
Tables of Resistance vs Temperature
32
Tables of Resistance vs Temperature
Material code B (K)
T RC 4340 S 4520 SC 4500 T
(°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) (°C)
- 55 105.68 25.5 - 7.2 126.1 26.6 - 7.55 129.77 26.5 - 7.5 - 55
- 50 74.01 22.1 - 6.9 87.73 23.0 - 7.35 89.31 22.9 - 7.3 - 50
- 45 52.37 19.0 - 6.7 61.59 19.8 - 7.16 62.15 19.7 - 7.1 - 45
- 40 37.43 16.2 - 6.6 43.62 16.9 - 6.97 43.72 16.8 - 6.9 - 40
- 35 27.01 13.8 - 6.4 31.17 14.3 - 6.79 31.07 14.3 - 6.7 - 35
- 30 19.66 11.6 - 6.2 22.45 12.1 - 6.62 22.29 12.0 - 6.5 - 30
- 25 14.44 9.7 - 6.0 16.31 10.1 - 6.45 16.15 10.0 - 6.3 - 25
- 20 10.70 8.0 - 5.9 11.94 8.3 - 6.28 11.80 8.3 - 6.1 - 20
- 15 7.990 6.5 - 5.7 8.808 6.8 - 6.12 8.703 6.8 - 6.0 - 15
- 10 6.013 5.2 - 5.6 6.548 5.4 - 5.96 6.470 5.4 - 5.8 - 10
- 5 4.559 4.1 - 5.4 4.904 4.2 - 5.81 4.849 4.2 - 5.7 - 5
0 3.482 3.1 - 5.3 3.699 3.2 - 5.66 3.662 3.2 - 5.5 0
5 2.678 2.2 - 5.2 2.810 2.3 - 5.52 2.786 2.3 - 5.4 5
10 2.074 1.5 - 5.0 2.149 1.6 - 5.38 2.135 1.6 - 5.2 10
15 1.616 0.9 - 4.9 1.654 1.0 - 5.24 1.647 0.9 - 5.1 15
20 1.267 0.4 - 4.8 1.282 .4 - 5.10 1.279 0.4 - 5.0 20
25 1.0000 0.0 - 4.7 1.0000 0.0 - 4.97 1.0000 0.0 - 4.8 25
30 .7936 0.4 - 4.5 .7848 .4 - 4.85 .7865 0.4 - 4.7 30
35 .6334 0.8 - 4.4 .6196 .9 - 4.72 .6223 0.9 - 4.6 35
40 .5083 1.3 - 4.3 .4922 1.4 - 4.60 .4953 1.4 - 4.5 40
45 .4100 1.9 - 4.2 .3932 2.0 - 4.48 .3963 2.0 - 4.4 45
50 .3325 2.5 - 4.1 .3158 2.6 - 4.37 .3189 2.6 - 4.3 50
55 .2709 3.1 - 4.0 .2551 3.2 - 4.26 .2579 3.2 - 4.2 55
60 .2218 3.7 - 3.9 .2072 3.9 - 4.15 .2096 3.9 - 4.1 60
65 .1825 4.4 - 3.8 .1691 4.6 - 4.05 .1712 4.6 - 4.0 65
70 .1508 5.1 - 3.8 .1387 5.3 - 3.94 .1405 5.3 - 3.9 70
75 .1251 5.8 - 3.7 .1144 6.1 - 3.84 .1159 6.0 - 3.8 75
80 .1043 6.6 - 3.6 .09477 6.8 - 3.75 .09595 6.8 - 3.7 80
85 .08727 7.3 - 3.5 .07888 7.6 - 3.65 .07980 7.6 - 3.6 85
90 .07332 8.1 - 3.4 .06595 8.4 - 3.56 .06664 8.4 - 3.6 90
95 .06184 8.9 - 3.4 .05539 9.2 - 3.47 .05588 9.2 - 3.5 95
100 .05235 9.7 - 3.3 .04671 10.1 - 3.39 .04704 10.0 -3.4 100
105 .04448 10.5 - 3.2 .03956 10.9 - 3.30 .03975 10.8 - 3.3 105
110 .03793 11.3 - 3.1 .03364 11.7 - 3.22 .03371 11.7 - 3.3 110
115 .03245 12.1 - 3.1 .02872 12.6 - 3.14 .02869 12.5 - 3.2 115
120 .02785 12.9 - 3.0 .02461 13.4 - 3.07 .02450 13.4 - 3.1 120
125 .02399 13.7 - 3.0 .02117 14.3 - 2.99 .02100 14.2 - 3.0 125
130 .02072 14.5 - 2.9 .01828 15.1 - 2.92 .01805 15.1 - 3.0 130
135 .01796 15.4 - 2.8 .01584 16.0 - 2.85 .01557 15.9 - 2.9 135
140 .01561 16.2 - 2.8 .01376 16.8 - 2.78 .01347 16.8 - 2.9 140
145 .01360 17.0 - 2.7 .01201 17.7 - 2.72 .01169 17.6 - 2.8 145
150 .01189 17.8 - 2.7 .01050 18.6 - 2.65 .01017 18.5 - 2.7 150
Material code B (K)
T QA 4250 R 4400 RA 4380 T
(°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) (°C)
- 55 1101.8 8.3 - 7.36 113.9 25.9 - 7.42 110.7 8.6 - 7.53 - 55
- 50 71.33 7.2 - 7.13 79.69 22.4 - 7.22 77.22 7.4 - 7.29 - 50
- 45 50.51 6.2 - 6.91 56.29 19.2 - 7.03 54.43 6.4 - 7.07 - 45
- 40 36.14 5.3 - 6.70 40.12 16.4 - 6.84 38.76 5.5 - 6.85 - 40
- 35 26.11 4.5 - 6.50 28.85 14.0 - 6.66 27.86 4.6 - 6.65 - 35
- 30 19.05 3.8 - 6.31 20.92 11.8 - 6.48 20.22 3.9 - 6.46 - 30
- 25 14.02 3.2 - 6.12 15.29 9.8 - 6.31 14.81 3.3 - 6.27 - 25
- 20 10.41 2.6 - 5.85 11.27 8.1 - 6.14 10.94 2.7 - 6.09 - 20
- 15 7.791 2.1 - 5.78 8.367 6.6 - 5.98 8.143 2.2 - 5.92 - 15
- 10 5.879 1.7 - 5.62 6.260 5.3 - 5.83 6.112 1.8 - 5.76 - 10
- 5 4.470 1.3 - 5.46 4.719 4.1 - 5.67 4.622 1.4 - 5.60 - 5
0 3.424 1.0 - 5.31 3.583 3.1 - 5.53 3.522 1.0 - 5.45 0
5 2.642 .7 - 5.17 2.739 2.3 - 5.38 2.702 .8 - 5.31 5
10 2.052 .5 - 5.03 2.108 1.5 - 5.24 2.087 .5 - 5.17 10
15 1.605 .3 - 4.90 1.634 .9 - 5.11 1.623 .3 - 5.03 15
20 1.263 .1 - 4.77 1.274 .4 - 4.97 1.270 .1 - 4.91 20
25 1.0000 0.0 - 4.65 1.0000 0.0 - 4.84 1.0000 0.0 - 4.78 25
30 .7965 .1 - 4.53 .7897 .4 - 4.72 .7920 .1 - 4.66 30
35 .6380 .3 - 4.42 .6273 .9 - 4.60 .6308 .3 - 4.55 35
40 .5139 .4 - 4.31 .5012 1.4 - 4.48 .5052 .5 - 4.43 40
45 .4162 .6 - 4.20 .4026 1.9 - 4.36 .4068 .6 - 4.33 45
50 .3388 .8 - 4.10 .3255 2.5 - 4.25 .3292 .8 - 4.22 50
55 .2771 1.0 - 4.00 .2644 3.1 - 4.14 .2678 1.0 - 4.12 55
60 .2278 1.2 - 3.90 .2159 3.8 - 4.04 .2189 1.3 - 4.02 60
65 .1881 1.4 - 3.81 .1772 4.5 - 3.03 .1797 1.5 - 3.93 65
70 .1560 1.7 - 3.72 .1462 5.2 - 3.83 .1483 1.7 - 3.84 70
75 .1300 1.9 - 3.63 .1212 5.9 - 3.74 .1228 2.0 - 3.75 75
80 .1088 2.1 - 3.55 .1009 6.7 - 3.64 .1022 2.2 - 3.67 80
85 .0914 2.4 - 3.47 .08441 7.4 - 3.55 .08537 2.5 - 3.58 85
90 .07708 2.6 - 3.39 .07093 8.2 - 3.46 .07160 2.7 - 3.50 90
95 .06527 2.9 - 3.31 .05985 9.0 - 3.38 .06029 3.0 - 3.42 95
100 .05547 3.2 - 3.24 .05072 9.8 - 3.29 .05095 3.2 - 3.35 100
105 .04731 3.4 - 3.17 .04315 10.6 - 3.21 .04322 3.5 - 3.28 105
110 .04049 3.7 - 3.10 .03686 11.4 - 3.13 .03679 3.8 - 3.21 110
115 .03160 12.2 - 3.06 .03478 3.9 - 3.03 .03143 4.1 - 3.14 115
120 .02996 4.2 - 2.96 .02720 13.1 - 2.98 .02693 4.3 - 3.07 120
125 .02590 4.5 - 2.90 .02349 13.9 - 2.91 .02316 4.6 - 3.01 125
130 .02246 4.7 - 2.84 .02036 14.7 - 2.84 .01997 4.9 - 2.94 130
135 .01953 5.0 - 2.78 .01771 15.6 - 2.77 .01728 5.2 - 2.88 135
140 .01704 5.3 - 2.72 .01545 16.4 - 2.71 .01499 5.4 - 2.82 140
145 .01490 5.5 - 2.67 .01353 17.2 - 2.64 .01305 5.7 - 2.77 145
150 .01307 5.8 - 2.61 .01188 18.1 - 2.58 .01138 6.0 - 2.71 150
33
Tables of Resistance vs Temperature
Material code B (K)
T T 4630 U 4840 T
(°C) R (T) / R25 TF (%) α (%/°C) R (T) / R25 TF (%) α (%/°C) (°C)
- 55 137.0 27.2 - 7.64 173.7 28.5 - 8.04 - 55
- 50 94.92 23.5 - 7.45 118.2 24.6 - 7.83 - 50
- 45 66.34 20.2 - 7.26 81.16 21.2 - 7.63 - 45
- 40 46.77 17.3 - 7.09 56.25 18.1 - 7.44 - 40
- 35 33.25 14.7 - 6.90 39.33 15.4 - 7.25 - 35
- 30 23.83 12.4 - 6.72 27.74 12.9 - 7.07 - 30
- 25 17.22 10.3 - 6.56 19.73 10.8 - 6.89 - 25
- 20 12.54 8.5 - 6.39 14.15 8.9 - 6.71 - 20
- 15 9.205 6.9 - 6.23 10.23 7.3 - 6.54 - 15
- 10 6.806 5.6 - 6.08 7.456 5.8 - 6.38 - 10
- 5 5.069 4.3 - 5.92 5.475 4.5 - 6.22 - 5
0 3.803 3.3 - 5.78 4.051 3.4 - 6.06 0
5 2.873 2.4 - 5.63 3.019 2.5 - 5.91 5
10 2.185 1.6 - 5.49 2.267 1.7 - 5.76 10
15 1.673 1.0 - 5.35 1.714 1.0 - 5.61 15
20 1.289 .4 - 5.22 1.305 .5 - 5.47 20
25 1.0000 0.0 - 5.09 1.0000 0.0 - 5.33 25
30 .7805 .4 - 4.96 .7715 .4 - 5.20 30
35 .6129 .9 - 4.83 .5991 .9 - 5.06 35
40 .4842 1.4 - 4.71 .4681 1.5 - 4.94 40
45 .3847 2.0 - 4.59 .3681 2.1 - 4.81 45
50 .3074 2.6 - 4.48 .2911 2.8 - 4.69 50
55 .2470 3.3 - 4.37 .2316 3.4 - 4.57 55
60 .1996 4.0 - 4.26 .1853 4.2 - 4.45 60
65 .1621 4.7 - 4.15 .1491 4.9 - 4.34 65
70 .1323 5.4 - 4.04 .1207 5.7 - 4.23 70
75 .1086 6.2 - 3.94 .09813 6.5 - 4.12 75
80 .08953 7.0 - 3.84 .08023 7.3 - 4.02 80
85 .07417 7.8 - 3.75 .06592 8.2 - 3.91 85
90 .06173 8.6 - 3.65 .05443 9.0 - 3.82 90
95 .05161 9.5 - 3.56 .04515 9.9 - 3.72 95
100 .04334 10.3 - 3.47 .03763 10.8 - 3.63 100
105 .03655 11.2 - 3.39 .03151 11.7 - 3.54 105
110 .03095 12.0 - 3.31 .02650 12.6 - 3.45 110
115 .02632 12.9 - 3.22 .02237 13.5 - 3.38 115
120 .02247 13.7 - 3.15 .01897 14.4 - 3.28 120
125 .01925 14.6 - 3.07 .01615 15.3 - 3.20 125
130 .01656 15.5 - 2.99 .01381 16.2 - 3.12 130
135 .01429 16.4 - 2.92 .01185 17.1 - 3.04 135
140 .01238 17.3 - 2.85 .01020 18.0 - 2.97 140
145 .01076 18.1 - 2.78 .00882 19.0 - 2.90 145
150 .00938 19.0 - 2.72 .00765 19.9 - 2.83 150
34
On the packaging of all shipped thermistors, you will find a bar code label.
This label gives systematic information on the type of product, part number, lot number, manufacturing date and quantity.
An example is given below:
This information allows complete traceability of the entire manufacturing process, from raw materials to final inspection.
This is extremely useful for any information request, customer complaint or product return.
Lot number RoHS Logo
Manufacturing date
(YYMMDD)
Quantity of parts
per packaging
Product and part
number reference
Identification – Traceability
35
Circuit Protection Portfolio
Application Guide
APPLICATIONS
ESD XXXX
In Rush Current Limit XX
Long Wave Transient XX X XXX X
EMI Filtering XXX
EMI Filtering + Transient XXXXXXXXXXX
Load Dump XX
Automotive X XXXXXXX X XX
Mil Std 461-E X
ISO 7637 XX
IEC 61000 X XXX X XXX X X
Telecom Protection XX
Over Current Protection X
Diode Replacement X XX XXX X
Zener Replacement X XX XXX X
Military A-A-55682 X
Radiation Resistance XX
Industrial X XXXXX XX X X X
UL 1449 X
UL 1414 X
Medical (EN 60601) XX
High Speed Data Line Protection XX
Optic Transceiver Protection XX
Temperature Sensing XX
Low Leakage Circuit X
DATA
Data Sheet XXXXXXXXXXXXXXXXXX
Application Notes XXXX XX XXX X XXX
Reliability Data XX
Distributed Element Model X XXX X XXX X X
Frequency Response XXXXXXXXXX X
Fast Blow SMT Fuse (Surface Mount Fuse)
AVX PRODUCTS
SMT Broadband LCT Filter (Feedthru)
SMT Broadband LCT Filter Array (Feedthru Array)
SMT High Current Broadband LCT Filter
(High Current Feedthru)
SMT Bidirectional Transient Voltage
Suppressors & EMI Filters (TransGuard)
SMT Bidirectional Transient Voltage
Suppressors & EMI Filters Arrays (MultiGuard)
Low Capacitance SMT Bidirectional Transient
Voltage Suppressors & EMI Filters (StaticGuard)
SMT Bidirectional LCT Transient
Voltage Suppressor Filters (TransFeed)
Low Capacitance Bidirectional Transient
Voltage Suppressors (AntennaGuard)
Bidirectional Transient Voltage Suppressors for Low,
Medium & High Speed CAN Networks (CAN BUS Series)
Bidirectional Transient Voltage Suppressors
for USB Applications (USB Series)
Bidirectional Transient Voltage Suppressors
for Low Leakage CMOS Applications (UltraGuard)
Bidirectional Transient Voltage Suppressors for
High Energy Transients (Medium Power MLV)
Bidirectional Transient Voltage Suppressors for Load Dump &
Jump Start Auto Applications (Medium Power Automotive Series)
Bidirectional Transient Voltage Suppressors for Telecom
Applications (Medium Power MLV for Telecom)
Leaded Negative Temperature
Coefficient Thermistors
SMT Negative Temperature
Coefficient Thermistors
General Purpose Radial Leaded Power
MOV (Metal Oxide Varistors)
36
Fast Blow SMT Fuse (Surface Mount Fuse)
High accuracy, fast blow, surface mount fuses. Case sizes: 0402,
0603, 0805, 1206, 0612. Current ratings 250 mA to 5 Amps.
SMT Broadband LCT Filter (Feedthru)
Miniature surface mount broadband LC T configuration EMI filters.
FeedThru current ratings to 300 mA.
SMT Broadband LCT Filter Array (Feedthru Array)
Miniature surface mount broadband 4 element LC T configuration
EMI filter arrays. FeedThru current ratings of 300 mA.
SMT High Current Broadband LCT Filter
(High Current Feedthru)
High current, surface mount, broadband LC T configuration filters.
Feedthru currents up to 5 Amps.
SMT Bidirectional Transient Voltage Suppressors
& EMI Filters (TransGuard)
Miniature surface mount, bidirectional transient voltage
suppressor. Steady state operating voltages of 3.3 volts to 60
volts. Case sizes: 0402, 0603, 0805, 1206, 1210, 1812, 2220.
SMT Bidirectional Transient Voltage Suppressors
& EMI Filter Arrays (MultiGuard)
Miniature surface mount bidirectional transient voltage suppressor
2 or 4 element arrays. Steady state operating voltages of 5.6 volts
to 18 volts. Case sizes: 0405, 0508, 0612.
Low Capacitance SMT Bidirectional Transient Voltage
Suppressors & EMI Filters (StaticGuard)
Bidirectional transient voltage suppressor intended for low leakage
CMOS based IC protection. Can be operated at voltages up to
18V. Case sizes: 0402, 0405, 0508, 0603, 0612, 0805, 1206.
SMT Bidirectional LCT Transient Voltage Suppressor
Filters (TransFeed)
Miniature bidirectional transient voltage suppressor filter LC T
configuration. Relatively narrow band, high attenuation filter.
Discrete filter in 0508 package, 4 element array filter in 0612
package.
Low Capacitance Bidirectional Transient Voltage
Suppressors (AntennaGuard)
Low capacitance, bidirectional transient voltage suppressor
intended for high speed or high frequency applications. Available
in 0402 and 0603 case sizes. Capacitance values of 3 pF and 12
pF available.
Bidirectional Transient Voltage Suppressors for
Low, Medium & High Speed CAN Networks
(CAN BUS Series)
Bidirectional transient voltage suppressor intended for high speed
and slow speed CAN circuitry. Available configurations: 0603
discrete, 0405 two element array, 0612 four element array.
Bidirectional Transient Voltage Suppressors
for USB Applications (USB Series)
Bidirectional transient voltage suppressor intended for Universal
Serial Bus applications. Available configurations: 0402 and 0603
discrete; 0405 two element array; 0508 three element array; 0612
four element array.
Bidirectional Transient Voltage Suppressors
for Low Leakage CMOS Applications (UltraGuard)
Low leakage, bidirectional transient voltage suppressor intended
for CMOS battery powered designs. Steady state operating
voltages of 3, 5, 7, 10 and 15 volts (DC). Available configurations:
0402, 0603 and 0805 discrete; 0405 two element array; 0508
and 0612 four element array.
Bidirectional Transient Voltage Suppressors
for High Energy Transients (Medium Power MLV)
Medium power, bidirectional transient voltage suppressor.
Available in operating voltages of: 18, 26, 30, 48, 60 volts (DC).
Case sizes: 1206, 1210, 1812, 2220. Energy ratings 0.9 to
1.5 joules.
Bidirectional Transient Voltage Suppressors
for Load Dump & Jump Start Auto Applications (Medium
Power Automotive Series)
Medium power, bidirectional transient voltage suppressor.
Available in operating voltages of: 16 and 34 volts (DC). Case
sizes: 1206, 1210, 1812, 2220. Energy ratings 0.6 to 12 joules.
Load dump and jump start rated.
Bidirectional Transient Voltage Suppressors
for Telecom Applications (Medium Power MLV for Telecom)
Medium power, bidirectional transient voltage suppressor.
Available in operating voltages of: 60 and 90 Vrms in 1812 case
size. Energy ratings of 5 and 6 joules. CCITT 10x700μs 2kV
capable.
Leaded Negative Temperature Coefficient Thermistors
Negative temperature coefficient thermistors high accuracy NTCs
from 2k ohm to 100k ohm, general purpose NTCs from 10 ohms
to 1 meg ohm. Stud mounted NTCs from 10 ohms to 330 k ohms.
SMT Negative Temperature Coefficient Thermistors
Surface mount negative temperature coefficient thermistor in
0402, 0603, 0805 and 1206 case sizes.
General Purpose Radial Leaded Power
MOV (Metal Oxide Varistors)
Radial Metal Oxide varistors 11 Vrms to 625 Vrms. Energy ratings
to >500 J. Peak current ratings to 10,000 A.
Circuit Protection Portfolio
Terminology Guide
S-TNTC0M412-C
A KYOCERA GROUP COMPANY
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Shanghai
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KED Hong Kong Ltd.
Beijing
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KED Taiwan Ltd.
Tel: +886-2-2950-0268
KED Korea Yuhan Hoesa,
South Korea
Tel: +82-2-783-3604/6126
KED (S) Pte Ltd.
Singapore
Tel: +65-6509-0328
Kyocera Corporation
Japan
Tel: +81-75-604-3449
ASIA-KED
(KYOCERA Electronic Devices)
