Metal Film Fixed Resistors
Type LR Series
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.
The resistive element comprises a thin film of nickel-chrome alloy evaporated onto a high
They are available in a
thermal conductivity ceramic element. Metal end caps are force fitted to the element prior
wide range of resistance
to spiralling to value. Tinned copper lead wires are welded to the end caps and the
values and are suitable
components are then coated. One coat of phenolic resin is followed by three coats of
for general purpose
and precision
epoxy resin. All resistors are tested for value and tolerance.
applications.
Characteristics - Electrical
LR0204 LR1L LR1 LR2 LR100 LR200
Rated Power @ 70C (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 (%) 11 5 0.51 1 22 0.51 21 2 1 5 1 2 1 5 1 5
0.5 1 5
Code Letter FF J DFF GG DFF GG F J F G F J F J
DF 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)
1773241 CIS BI 06/2011 Dimensions are in millimeters Dimensions are shown for For email, phone or live chat, go to: te.com/help
and inches unless otherwise reference purposes only.
specified. Values in brackets Specifications subject
are standard equivalents. to change.Metal Film Fixed Resistors
Type LR Series
Dimensions
Style L* D d Nom l
LR0204 3.5 +/-0.2 2.0 max 0.45 28 +/-3.0
LR1 6.2 +/-0.5 2.3 +/-0.2 0.55 28 +/-3.0
LR1L 6.2 +/-0.5 2.3 +/-0.2 0.55 28 +/-3.0
LR2 9.7 +/-0.3 3.5 +/-0.2 0.55 28 +/-3.0
LR100 12.0 max 5.0 max 0.7 28 +/-3.0
LR200 12.0 max 5.5 max 0.7 28 +/-3.0
* Length is measured in accordance with IEC 294.
Power Derating Curve
100
80
60
40
20
0
0 20 40 60 70 80 100 120 125
Ambient Temperature (C)
Surface Temperature Rise Vs Load
100
LR1L
LR1 LR2
80
60
LR0204
40
20
0
0 0 0.2 0.25 0.4 0.6 0.75
Power Dissipation (W)
1773241 CIS BI 06/2011 Dimensions are in millimeters Dimensions are shown for For email, phone or live chat, go to: te.com/help
and inches unless otherwise reference purposes only.
specified. Values in brackets Specifications subject
are standard equivalents. to change.
Rated Power (%)
Temperature Rise above Ambient (C)