Document Number: 33003
Revision 22-Sep-04
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M, C, T
Vishay Dale
For technical questions, contact: thermistor1@vishay.com
FEATURES
• Small size - conformally coated.
• Wide resistance range.
• Available in 11 different R-T curves.
NTC Thermistors, Coated
DESCRIPTION
Models M, C, and T are conformally coated, leaded thermistors for standard PC board mounting or assembly in probes.
The coating is baked-on phenolic for durability and long-term stability. Models M and C have tinned solid copper leads.
Model T has solid nickel wires with Teflon® insulation to provide isolation when assembled in metal probes or housings.
LD DIAMETER WIRE SIZE
Type M AWG 30: 0.0100 [0.254]
Type C AWG 28: 0.0126 [0.320]
Type T AWG 30: 0.0100 [0.254]
DIMENSIONS in inches [millimeters]
TINNED COPPER WIRE TEFLON INSULATED NICKEL WIRE
BODY DIA.
MAX. BODY DIA.
MAX.
1.5 [36.1] MIN.
CLEAN LEAD LENGTH
1/4 NOM.
3 ± 0.25 [76.2 ± 6.4]
CURVE GLOBAL MODEL RESISTANCE VALUE POINT MATCH TOLERANCE PACKAGING
01 C 2001 = 2K F = ± 1 % F = Lead (Pb)-free, Bulk
02 MJ = ± 5 %
03 TK = ± 10 % P = Tin/Lead, Bulk
04
07
08
09
12
13
14
17
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: 01C2001FP (preferred part numbering format)
01C2001FP
Historical Part Number example: 1C2001FP (will continue to be accepted)
01 C 2001 F P
HISTORICAL CURVE GLOBAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING
CURVE GLOBAL MODEL RESISTANCE VALUE CHARACTERISTICS PACKAGING CURVE TRACK TOLERANCE*
01 C 2001 = 2K F = Lead (Pb)-free, Bulk
S
02 M
T
03 P = Tin/Lead, Bulk
04
07
08
09
12
13
14
17
New Global Part Numbering: 01C2001SPC3 (preferred part numbering format)
01C2001SPC3
Historical Part Number example: 1C2001SPC3 (will continue to be accepted)
1 C 2001 S P C3
HISTORICAL CURVE GLOBAL MODEL RESISTANCE VALUE CHARACTERISTIC PACKAGING CURVE TRACK TOLERANCE
A3
B3
C3
A2
B2
C2
A4
B4
A5
B5
C5
A8
B8
C8
*See following pages for Tolerance
explanations and details.
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Document Number: 33003
Revision 22-Sep-04
For technical questions, contact: thermistor1@vishay.com
1234789121417
27 •
33 ••
50 •••
56 •••
68 • •••
82 •• •••
100 •• •••
120 •• •••
150 ••• •••
180 ••• •••
220 ••• •••
270 •••
330 • •••
390 •• •••
470 •• •••
500 •• •••
560 •• •••
680 •••
820 •••
1K •••
1.2K •••
1.5K •••
1.8K • •••
2.2K • •••
2.7K •• •••
3.3K •• •••
3.9K •••
4.7K •••
5K •••
5.6K •••
6.8K ••• •
8.2K ••• • •
10K ••• • •• ••
12K ••• • •• ••
15K ••• •• ••• •••
18K ••• •• ••• •••
22K •• ••• •••
27K •• • • ••• •••
33K ••• • •• ••• •••
39K ••• •• •• ••• •••
47K ••• •• ••• ••• •••
50K ••• •• ••• ••• •••
56K ••• ••• ••• •••
68K ••• ••• •••
82K ••• ••• •••
100K ••• ••• •••
120K ••• •••
150K ••• •••
180K ••• •••
220K •••
270K •••
330K •
390K ••
470K ••
500K •••
560K •••
680K •••
820K •••
1 Meg •••
R25
(Ohms)
CURVE NUMBER
SELECTION GUIDE FOR TYPE M, C, AND T THERMISTORS
NOTE:
1. Intermediate resistance values between
the standard value series are available.
Size would be the same as the color
grouping.
2. Other body diameters available. Bead
diameter increases as Res. decreases.
(Consult Factory)
3. Leaded series of thermistors includes
additional styles: (Consult Factory)
Type B: 26AWG lead, 0.0159 [0.40]
Type F: 32AWG lead, 0.008 [0.20]
Type E: 24AWG lead, 0.020 [0.51]
Type D: 22AWG lead, 0.025 [0.64]
Type G: 20AWG lead, 0.032 [0.81]
Type H: 18AWG lead, 0.040 [1.02]
MAXIMUM BODY DIAMETER
• 0.125 [3.2]
•• 0.110 [2.8]
••• 0.095 [2.4]
DISSIPATION CONSTANT
2 - 3 mWatts/°C
THERMAL TIME CONSTANT
6 - 14 Seconds
NTC Thermistors, Coated
Document Number: 33003
Revision 22-Sep-04
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M, C, T
Vishay Dale
For technical questions, contact: thermistor1@vishay.com
DESCRIPTION OF THERMISTOR TOLERANCES
The many applications of thermistors have mandated the need for two basic tolerance schemes for these products - Curve
Tracking and Point Match Thermistors. An example of the resistance tolerance at various temperatures for the two different
tolerancing methods is described in the following graph:
CURVE TRACKING TOLERANCE
Thermistors are calibrated at the high temperature of the curve track range and then final tested at the low temperature of the
curve track range. This ensures that the thermistor will meet the specified temperature accuracy at every temperature within
the desired temperature range. Several temperature ranges are available and the accuracy of the thermistor may be ± 0.2 °C,
± 0.5 °C, and ± 1.0 °C. The Curve Tracking temperature ranges and their code designators are shown in Figure 1 and Table 1.
To specify, add the appropriate suffix from the following table to the part number.
Example: 1M1002-B3 = Curve 1, 10 kilohms at + 25 °C, curve tracking to ± 0.5 °C from 0 °C to + 70 °C
TOLERANCES AVAILABLE FOR TYPE M, C AND T THERMISTORS
TOLERANCE (± %)
TEMPERATURE (°C)
± 5 % POINT MATCH CURVE
± 1 °C CURVE TRACK CURVE
25 °C
10
9
8
7
6
5
4
3
2
1
0
- 50
- 40
- 30
- 20
- 10
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
A2
A8
A3
A5
A4
STANDARD ELECTRICAL SPECIFICATIONS FOR CURVE TRACKING THERMISTORS
TEMP. RANGE 0 °C to + 70 °C - 20 °C to + 50 °C0 °C to + 100 °C 25 °C to + 90 °C0 °C to + 50 °C
TOLERANCE
±
1
°
C
±
0.5
°
C
±
0.2
°
C
±
1
°
C
±
0.5
°
C
±
0.2
°
C
±
1
°
C
±
0.5
°
C
±
0.2
°
C
±
1
°
C
±
0.5
°
C
±
0.2
°
C
±
1
°
C
±
0.5
°
C
±
0.2
°
C
PART NO. SUFFIX - A3 - B3 - C3 - A2 - B2 - C2 - A4 - B4 - C4 - A5 - B5 - C5 - A8 - B8 - C8
C 1 XXX XXX XXN/AXXXXXX
U 2 XXX XXX XXN/AXXXXXX
R 4 XXX XXX XXN/AXXXXXX
V 8 XXX XXX XXN/AXXXXXX
E 9 XXX XXX XXN/AXXXXXX
NTC Thermistors, Coated
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Document Number: 33003
Revision 22-Sep-04
For technical questions, contact: thermistor1@vishay.com
The standard leaded thermistors are calibrated and tested at 25 °C to a tolerance of ± 5 % or ± 10 %; however, tighter
tolerance, point matched thermistors are readily available as are special point match temperatures to fit your application.
Since these thermistors have only one controlled point of reference (the point match temperature), the resistance at other
temperatures is given by the "Resistance vs. Temperature Conversion Tables" for the appropriate material curve. The resistance
value at any temperature is the ratio factor times the resistance at 25 °C.
Example: 1M1002-5, +70 °C resistance = (Resistance factor for curve 1 at 70 °C is 0.1990) X (10000 ohm resistance at 25 °C)
= 1990 ohms.
The tolerance of the resistance at any temperature is described by Figure 2.
Point match resistance tolerances at temperatures other than
25 ºC are not the same as the calibration temperature. This
difference is presented in Figure 2.
The tolerance at any given temperature is the point match
tolerance + the MT ± % (Manufacturing Tolerance).
The MT ± % may be obtained from the R vs. T Conversion
tables and is added to the point match temperature, i.e.,
± 1 % Tol. at 25 ºC + ± 2.6 % at - 30 ºC for Curve 1 equals a
total tolerance of ± 3.6 % at - 30 ºC.
A spreadsheet is available for the Vishay Thermistor Materials that calculates Beta, Steinhart-Hart Equation Constants A, B,
and C, the resistance at any temperature based upon the Steinhart constants or Beta, the temperature equivalent of the
resistance reading, and resistance temperature coefficients.
This spread sheet will also calculate the total resistance tolerance of any point matched thermistor for temperatures in 10 ºC
increments, and the resistance tolerance at any temperature within the calibrated range of curve tracking thermistors. Please
contact factory if interested in this Excel™ spreadsheet.
POINT MATCH TOLERANCE
COMPUTER AIDS FOR THERMISTOR SELECTION
FIGURE 2
POINT MATCH TOLERANCES VS. TEMPERATURE
RESISTANCE
TEMPERATURE
25 °C
NOMINAL R vs. T
MAX. R vs. T
MIN. R vs. T
PIVOT POINT
(CALIBRATION TEMPERATURE)
NTC Thermistors, Coated
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
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