Metal Film Fixed Resistors
Type LR Series
Type LR Series
Characteristics -
Electrical
LR0204
Rated Power @ 70°C (W)
0.25
Resistance Range (Ohms) Min
1R0
10R
Max
9R1
1M0
Tolerance (%)
1
1
Code Letter
F
F
Temp. Coefficient (ppm/°C)
± 100 ± 100
Selection Series
E24
E24
On Request
E96
Limiting Element Voltage
200
Max Permitted Element Voltage
200
Max Overload Voltage
400
Max Intermittent Overload Voltage
500
Operating Temp. Range (°C)
Climatic Category
Dielectric Strength (V)
500
Insulation Resistance
Min Dry (Mohms)
LR1L
LR1
LR2
LR100 LR200
0.5
0.6
0.75
1
2
R10
1R0
10R
1M1
1R0
10R
10R
R82
9R1
1M0
10M
1M0
1M0
1M0
5
1
2 1
5 1
5
0.5 1
2
0.5 1
2
0.5 1
5
5 1
2
1
2
1
J
F
G F
J F
J
D F
G
D F
G
D F
J
J F
G
F
G
F
± 200
± 100
± 50
± 100
± 100 25/50/100 25/50/100
E12
E24
E24
E24
E24
E24
E24
E96
E96
E96
E96
350
350
350
500
500
350
350
350
500
500
500
700
700
1000
1000
750
750
750
1000
1000
-55 to +155
55/155/56
700
700
700
700
700
1000
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.
Dimensions
L
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.
d
D
Style
LR0204
LR1L
LR1
LR2
LR100
LR200
L*
3.2 ± 0.2
6.2 ± 0.5
6.2 ± 0.5
9.7 ± 0.3
12.0 Max
16.0 Max
D
1.7 ± 0.2
2.3 ± 0.2
2.3 ± 0.2
3.5 ± 0.2
5.0 Max
5.5 Max
d Nom
0.45
0.55
0.55
0.7
0.8
0.8
l
25
25
25
25
25
29
■
* Length is measured in accordance with IEC 294.
Power Derating Curve
100
80
Rated Power (%)
60
40
20
0
0
20
40
60 70 80
100
120 125
Ambient Temperature (°C)
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
Metal Film Fixed Resistors
Type LR Series
Surface Temperature Rise Vs Load
Temperature Rise above Ambient (°C)
100
80
60
LR0204
LR1L
LR1
LR2
40
20
0
0
0 0.2
0.25
0.4
0.6
0.75
Power Dissipation (W)
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.
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
4.23
4.24
4.25.1
4.25.3
TEST REF
4.13
4.16
4.18
4.19
4.22
Long Term Tests ±(1% + 0.05 ohm)
Climatic sequence
Damp heat, steady state
Endurance at 70°C
Endurance at 125°C
Short Term Tests ±(0.25% + 0.05 ohm)
Overload
Robustness of terminations
Resistance to soldering heat
Rapid change of temperature
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.
How to Order
LR
Common Part
1
Style
0204 - 0.25W
1L - 0.5W
LR - Metal Film
Fixed Resistor
1 - 0.6W
2 - 0.75W
100 - 1W
200 - 2W
J - 5%
G - 2%
F - 1%
D - 0.5%
F
Tolerance
100R
Value
100 ohm
(100 ohms) 100R
1K0
(1000 ohms) 1K0
100 K ohm
(100,000 ohms) 100K
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
