Document Number: 28733

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Revision: 24-Feb-04

5

VR37

High Ohmic/High Voltage Resistors

Vishay BCcomponents

4.20

29 (Eb)

bump

3 × 1500 bumps in 3 directions; 40 g

no damage

∆R/R max.: ± 0.5 % + 0.05 Ω

4.22

6 (Fc)

vibration

frequency 10 to 500 Hz; displacement

1.5 mm or acceleration 10 g; 3 directions;

total 6 hours (3 × 2 hours)

no damage

∆R/R max.: ± 0.5 % + 0.05 Ω

4.23

climatic sequence:

4.23.2

2 (Ba)

dry heat

16 hours; 155 °C

4.23.3

30 (Db)

cycle

24 hours; 55 °C; 90 to 100 % RH

4.23.4

1 (Aa)

cold

2 hours; − 55 °C

4.23.5

13 (M)

low air pressure

2 hours; 8.5 kPa; 15 to 35 °C

4.23.6

30 (Db)

damp heat (accelerated)

remaining cycles

5 days; 55 °C; 95 to 100 % RH

∆R/R max.: ± 1.5 % + 0.1 Ω

4.24.2

3 (Ca)

damp heat

(steady state)

56 days; 40 °C; 90 to 95 % RH;

limiting voltage 100 V (DC)

∆R/R max.: ± 1.5 % + 0.1 Ω

4.25.1

endurance

∆R/R max.: ± 1.5 % + 0.1 Ω

4.8.4

temperature coefficient

between − 55 °C and + 155 °C

≤ ± 200

TEST PROCEDURES AND REQUIREMENTS

IEC

60115-1

CLAUSE

IEC

60068-2

TEST

METHOD

TEST

PROCEDURE

REQUIREMENTS