tolerance. Ideally suited for general purpose use.
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.
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.
STOCKISTS:
This product is not available in Distribution.
Telephone Tyco Passive Product Support Team ++ 44 (0) 1793 572484
Page 1 of 3
Website – www.passives.tycoelectronics.com
Email – passivesales@tycoelectronics.com
Product – Specification
TYPE LR25 SERIES
SPECIFICATIONS
Rated Power @ 70 °C
Resistance Range Min
Max
Tolerance
Code letter
Temperature Coefficient
Selection Series
Limiting Element Voltage
Maximum Permitted Element Voltage
Maximum Overload Voltage
Max Intermittent Overload Voltage
Operating Temperature Range
Climatic Category
Dielectric Strength
Insulation Resistance Minimum Dry
1
st
April 2003
ISSUE 2
UNITS
Watts
Ohms
Ohms
%
ppm/°C
Volts
Volts
Volts
Volts
°C
Volts
Mohms
1R0
10M
1
F
± 100
E24
LR25
0.25
10R
1M
1
F
± 100
E96
250
250
500
500
55 to +125
55/125/56
500
1000
DIMENSIONS
STYLE
LR25
L
*
D
d (nom)
0.55 ± 0.02
5.6 ± 0.3
2.3 ± 0.2
* Length is measured in accordance with IEC 294.
DERATING CURVE
SURFACE TEMPERATURE RISE VS. LOAD
MARKING
The resistors are marked with a colour band code in accordance with IEC 62.
MOUNTING
The resistors are suitable for processing on automatic insertion equipment and cutting and bending machines.
Telephone Tyco Passive Product Support Team ++ 44 (0) 1793 572484
Page 2 of 3
Website – www.passives.tycoelectronics.com
Email – passivesales@tycoelectronics.com
Product – Specification
TYPE LR25 SERIES
PACKAGING
LR25 resistors are normally supplied taped in 'ammo' boxes of 5000 pieces.
.
1
st
April 2003
ISSUE 2
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
HOW TO ORDER
Orders for these components should include the following information:-
Type, tolerance code letter and value
e.g. LR25 J 24K
This publication is issued to provide outline information only and (unless specifically agreed to the contrary by the Company in writing) is not to form part of any order or be
regarded as a representation relating to the products or service concerned. We reserve the right to alter without notice the specification, design, price or conditions of
supply of any product or service. Whilst Tyco Electronics Components products are of the very highest quality and reliability, all electronic components can occasionally
be subject to failure. Where failure of a Tyco Electronics Components product could result in life threatening consequences, then the circuit and application must
be discussed with the Company. Such areas might include ECG, respiratory and other medical and nuclear applications and any non fail-safe applications circuit.
Telephone Tyco Passive Product Support Team ++ 44 (0) 1793 572484
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