VHP-3, VHP-4, VPR247

Vishay Foil Resistors

Hermetically Sealed Power and Current Sensing Resistor

with TCR of 2 ppm/°C and Power up to 10 Watts

www.vishay.com

For any questions, contact: foil@vishay.com

Document Number: 63005

4

Revision: 31-Oct-07

Notes

1. Whichever is lower.

2. Heat

sink

chassis

dimensions

and

requirements

per

MIL-PRF-39009/1:

3. Inductance (L) due mainly to the leads.

4. The resolution limit of existing test equipment (within the

measurement capability of the equipment, or “essentially zero”).

5. Not to exceed power rating of resistor.

6. Vishay test data as compared to MIL-PRF-39009 is shown for

illustration purposes, Vishay test conditions that deviate from the

Mil test method are noted within parentheses.

7. Maximum ambient temperature rating is + 150 °C.

8. Maximum overload rating is 15 W (5 x rated power in free air;

1.5 x rated power on heatsink), with applied voltage not to

exceed 750 V.

9.

ΔR’s are as shown plus 0.001 Ω to allow for measurement errors

at low resistance values.

TABLE 4 - ENVIRONMENTAL PERFORMANCE

METHOD

MIL-PRF-39009

ΔR LIMITS

VHP-3, VHP-4 AND VPR247

TYPICAL

Test Group I

Conditioning

4.8.2

± 0.2 % + 0.01

Ω

± 0.03 %

Test Group II

Resistance temperature

4.8.4

< 1

Ω

See tables 1 and 2, page 1

Characteristic

± 100 ppm/°C;

(- 55 °C to + 125 °C)

1

Ω to 19.6 Ω:

± 50 ppm/°C;

≥ 20 Ω:

± 30 ppm/°C

Low temperature storage

4.8.16

± 0.3 % + 0.01

Ω

± 0.005 %

DWV

(300 V at atmospheric pressure)

4.8.5

± 0.2 % + 0.01

Ω

± 0.005 %

Insulation resistance

4.8.6

Ω

Ω

Low temperature operation

4.8.7

± 0.3 % + 0.01

Ω

± 0.01 %

(5 s at 15 W)

4.8.8

± 0.3 % + 0.01

Ω

± 0.03 %

Moisture resistance

4.8.9

± 0.5 % + 0.01

Ω

± 0.02 %

Terminal strength

4.8.10

± 0.2 % + 0.01

Ω

± 0.005 %

Test Group III

Shock - specified pulse

(Post-test DWV at 300 V)

4.8.11

± 0.2 % + 0.01

Ω

± 0.005 %

Vibration - high frequency

(Post-test DWV at 300 V)

4.8.12

± 0.2 % + 0.01

Ω

± 0.005 %

Test Group IV

Life test

10 W at 25 °C for 2000 h

4.8.13

± 1.0 % + 0.01

Ω

± 0.01 %

80 % power at + 70 °C

for 2000 h

-

-

± 0.04 %

Test Group V

High temperature exposure

2000 h at + 150 °C

4.8.14

± 1.0 % + 0.05

Ω

± 0.05 %

INCHES

MM

L

6.00

152.4

W

4.00

101.6

H

2.00

50.8

T

0.04

1.0