RH

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Vishay Sfernice

Revision: 07-Dec-15

2

Document Number: 50013

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

STANDARD ELECTRICAL SPECIFICATIONS

MODEL

RATED POWER

W

VOLTAGE LIMIT

TOLERANCE

± %

RESISTANCE

RANGE

Ω

TEMPERATURE

COEFFICIENT

± ppm/°C

RH5

10

160

2, 5, 10

0.01 to 12K

< 5

Ω ± 100,

5

Ω to 10 Ω ± 50,

> 10

Ω ± 25

10

0.5, 1

0.1 to 12K

RH10

12.5

250

10

0.006 to 20K

12.5

2, 5

0.01 to 20K

12.5

0.5, 1

0.1 to 20K

RH25

25

550

10

0.006 to 62K

25

2, 5

0.01 to 62K

25

1

0.05 to 62K

25

0.5

0.1 to 62K

RH50

50

1285

10

0.006 to 130K

50

2, 5

0.01 to 130K

50

1

0.05 to 130K

50

0.5

0.1 to 130K

TECHNICAL SPECIFICATIONS

VISHAY SFERNICE MODEL AND STYLE

RH5

RH10

RH25

RH50

Power Rating

Chassis Mounted Resistors

MIL

Limits

25 °C

5 W

10 W

20 W

30 W

70 °C

4 W

8 W

16 W

24 W

Vishay Sfernice

Limits

25 °C

10 W

12.5 W

25 W

50 W

70 °C

8 W

10 W

20 W

40 W

Unmounted Resistors

Vishay Sfernice

Limits

25 °C

4 W

6 W

9 W

12 W

70 °C

3.2 W

4.8 W

7.2 W

9.6 W

160 V

250 V

550 V

1285 V

1000 V

1500 V

2500 V

2500 V

PERFORMANCE

MIL-R-18546 D

NF C 83-210

TYPICAL DRIFTS

TESTS

CONDITIONS

REQUIREMENTS

Operating Temperature Range

-55 °C +200 °C

-

-

Momentary Overload

5

± (0.25 % + 0.05

Ω)

± (0.1 % + 0.05

Ω)

Climatic Sequence

-55 °C +200 °C

5 cycles

± (0.25 % + 0.05

Ω)

± (0.1 % + 0.05

Ω)

Load Life Test at High

Temperature

2 h at +275 °C

± (1 % + 0.05

Ω)

Ins. resistance

≥ 1 GΩ

± (0.1 % + 0.05

Ω)

Humidity (Steady State)

56 days

± (1 % + 0.05)

Ins. resistance

≥ 100 MΩ

± (0.5 % + 0.05

Ω)

Resistance to Moisture

Climatic sequences test, with load

and polarisation

± (1 % + 0.05

Ω)

± (0.5 % + 0.05

Ω)

Temperature Coefficient

5

Ω to 10 Ω

> 10

Ω

± 50 ppm/°C

± 25 ppm/°C

± 15 ppm/°C

Load Life

at Maximum Temperature

1000 h 25 °C

Vishay

± (1 % + 0.05

Ω)

± (0.1 % + 0.05

Ω)

200 °C

30 % of

Sfernice

Ins. resistance

≥ 1 GΩ

± (0.5 % + 0.05

Ω)