L
d
D
Type LR Series
The resistive element comprises a
thin film of nickel-chrome alloy
evaporated onto a high thermal
conductivity ceramic element.
Metal end caps are force fitted to
the element prior to spiralling to
value. Tinned copper lead wires are
welded to the end caps and the
components are then coated. One
coat of phenolic resin is followed
by three coats of epoxy resin.
All resistors are tested for value
and tolerance.
Key Features
■Superior quality metal
film resistors with 1%
tolerance and
temperature coefficients
down to 50 ppm. 3 case
sizes are available in
0.25, 0.6, 0.75W. The
LR1L series is a
low ohmic value range
from 0.1 to 0.82 ohm.
Ideally suited where low
resistance and small size
are required.
■Metal film resistors have
excellent stability under
load and severe
environmental
conditions. They exhibit
very low noise current
and voltage coefficients.
They are available in a
wide range of resistance
values and are suitable
for general purpose
and precision
applications.
Dimensions
Style L* D d Nom l
LR0204 3.2 ± 0.2 1.7 ± 0.2 0.45 25
LR1L 6.2 ± 0.5 2.3 ± 0.2 0.55 25
LR1 6.2 ± 0.5 2.3 ± 0.2 0.55 25
LR2 9.7 ± 0.3 3.5 ± 0.2 0.7 25
LR100 12.0 Max 5.0 Max 0.8 25
LR200 16.0 Max 5.5 Max 0.8 29
* Length is measured in accordance with IEC 294.
Power Derating Curve
0 20 40 60 70 80 100 120 125
100
80
60
40
20
0
Rated Power (%)
Ambient Temperature (°C)
Characteristics -
Electrical
LR0204 LR1L LR1 LR2 LR100 LR200
Rated Power @ 70°C (W) 0.25 0.5 0.6 0.75 1 2
Resistance Range (Ohms) Min 1R0 10R R10 1R0 10R 1M1 1R0 10R 10R
Max 9R1 1M0 R82 9R1 1M0 10M 1M0 1M0 1M0
Tolerance (%) 1151 2 1 2 1 5 1 2 1 5 1 5
Code Letter FFJF G F G F J F G F J F J
Temp. Coefficient (ppm/°C) ± 100 ± 100 ± 200 ± 100 ± 50 ± 100 ± 100 25/50/100 25/50/100
Selection Series E24 E24 E12 E24 E24 E24 E24 E24 E24
On Request E96 E96 E96 E96 E96
Limiting Element Voltage 200 350 350 350 500 500
Max Permitted Element Voltage 200 350 350 350 500 500
Max Overload Voltage 400 500 700 700 1000 1000
Max Intermittent Overload Voltage 500 750 750 750 1000 1000
Operating Temp. Range (°C) -55 to +155
Climatic Category 55/155/56
Dielectric Strength (V) 500 700 700 700 700 700
Insulation Resistance 1000
Min Dry (Mohms)
0.5 1 2
DFG
0.5 1 2
DFG
0.5 1 5
DFJ
Metal Film Fixed Resistors
Type LR Series
Literature No. 1773241
Issued: 03-08
Dimensions are shown for
reference purposes only.
Dimensions are in
millimetres unless
otherwise specified.
Specifications subject to
change.
tycoelectronics.com
passives.tycoelectronics.com
Performance Characteristics
The evaluation of the performance characteristics is carried out with reference to IEC
Specifications QC 400 000 and QC 400 100.
TEST REF Long Term Tests ±(1% + 0.05 ohm)
4.23 Climatic sequence
4.24 Damp heat, steady state
4.25.1 Endurance at 70°C
4.25.3 Endurance at 125°C
TEST REF Short Term Tests ±(0.25% + 0.05 ohm)
4.13 Overload
4.16 Robustness of terminations
4.18 Resistance to soldering heat
4.19 Rapid change of temperature
4.22 Vibration
* For LR1L the limits are ± (5% + 0.1 ohm) and ± (1% + 0.05 ohm)
respectively. All resistance values are measured at a distance of 12mm
from the end cap.
Mounting
The resistors are suitable for processing on automatic insertion equipment and cutting and bending machines.
Marking
The resistors are marked with a colour band code in accordance with JIS C 0802.
Packaging
LR0204, LR1L and LR1 resistors are normally supplied taped in 'ammo' boxes of 4000 pieces.
LR2 resistors are normally supplied taped in 'ammo' boxes of 1000 pieces.
Other package styles on request.
All tape specifications are in accordance with IEC 286-1.
How to Order
LR 1 F 100R
Common Part
0204 - 0.25W
1L - 0.5W
1 - 0.6W
2 - 0.75W
100 - 1W
200 - 2W
Style
J - 5%
G - 2%
F - 1%
D - 0.5%
Tolerance Value
LR - Metal Film
Fixed Resistor
100 ohm
(100 ohms) 100R
1K0
(1000 ohms) 1K0
100 K ohm
(100,000 ohms) 100K
Surface Temperature Rise Vs Load
0 0 0.2 0.25 0.4 0.6 0.75
100
80
60
40
20
0
Temperature Rise above Ambient (°C)
Power Dissipation (W)
LR0204
LR1L
LR1 LR2
Metal Film Fixed Resistors
Type LR Series
Literature No. 1773241
Issued: 03-08
Dimensions are shown for
reference purposes only.
Dimensions are in
millimetres unless
otherwise specified.
Specifications subject to
change.
tycoelectronics.com
passives.tycoelectronics.com
