User guide

Document Number: 50009 For technical questions, contact: [e-mail]
www.vishay.com
Revision: 04-Jul-07 42
RLP
Insulated Precision Wirewound Resistors
Axial Leads
Vishay Sfernice
STABILITY AND POWER RATING
Stability changes slightly according to power rating and ambient temperature. This fact is especially important for users needing
a life drift lower than the initial resistance tolerance. Typical drifts, after 2000 hours life test made under the 90’/30’ conditions and
at an ambient temperature of 25 °C, are:
INDUCTANCE (Example)
PERFORMANCE
TESTS CONDITIONS
REQUIREMENTS TYPICAL VALUES
AND DRIFTS
MIL-R-26 E CECC40201-06
Dielectric w/s Voltage
500 VRMS for RLP 1-2-3
1000 VRMS for RLP 6-10
± (0.1 % + 0.05 Ω) - ± (0.05 % + 0.05 Ω)
Short Time Overload
5 Pn/5 s for Pn < 5 W
10 Pn/5 s for Pn ≥ 5 W
± (0.2 % + 0.05 Ω) ± 0.25 % + 0.05 Ω ± (0.1 % + 0.05 Ω)
Climatic Sequence
EN 140-201
fasc. 19A - 55 °C/+ 200 °C
5 cycles
-
± 0.5 % + 0.05 Ω
Insulation R > 100 MΩ
± (0.2 % + 0.05 Ω)
Ins. resistance > 10
3
MΩ
Humidity (Steady State)
EN 140-201
fasc. 3A 56 days 95 % R.H.
-
± 0.5 % + 0.05 Ω
Insulation R > 100 MΩ
± (0.25 % + 0.05 Ω)
Ins. resistance > 10
3
MΩ
Vibration
MIL-STD-202
Method 204 - Test D: 20 g
10/2000 Hz
± (0.1 % + 0.05 Ω) ± 0.25 % + 0.05 Ω ± (0.05 % + 0.05 Ω)
Load Life
MIL-STD-202
Method 108 Pn 1000 h
± (0.5 % + 0.05 Ω)
± 0.5 % + 0.05 Ω
Insulation R ≥ 1 GΩ
± (0.3 % + 0.05 Ω)
Moisture Resistance
MIL-STD-202
Method 106
± (0.2 % + 0.05 Ω)
Insulation resistance
> 100 MΩ
-
± (1 % + 0.05 Ω)
Ins. resistance > 10
3
MΩ
High Temperature 250 h at + 275 °C ± (0.5 % + 0.05 Ω)
± 0.5 % + 0.05 Ω
Insulation R ≥ 1 GΩ
± (0.25 % + 0.05 Ω)
Shock
MIL-STD-202
100 g Method 205 - Test C
± (0.1% + 0.05 Ω) ± 0.25 % + 0.05 Ω ± (0.05 % + 0.05 Ω)
TEMPERATURE COEFFICIENT IN THE RANGE - 55 °C TO + 200 °C
OHMIC RANGE
LIMITS
TYPICAL VALUE
NF C MIL
< 1 Ω ± 100 ppm/°C ± 90 ppm/°C
± 50 ppm/°C
1 Ω to < 10 Ω ± 50 ppm/°C ± 50 ppm/°C
≥ 10 Ω ± 25 ppm/°C ± 30 ppm/°C + 0 to - 20 ppm/°C
OHMIC RANGE RLP1 RLP2 RLP3 RLP6 RLP10
ΔR %
R %
Pn 1 W 2 W 3 W 5 W 10 W 0.3
0.5 Pn 0.5 W 1 W 1.5 W 2.5 W 5 W 0.15
FREQUENCY IN MHz
H
µ N I E C N A T C U D N I
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.1 1 10
0 0 1 3 P
L R Ω
RLP3 NI 100 Ω