MIL-PRF-39009-2 Resistors, Fixed, Wire-Wound, \(Power Type, Chassis Mounted\), Nonestablished Reliability, And Established Reliability, Styles Rer40, Rer45, Rer50, And Rer55This specification covers the associated requirements for nonestablished reliability and established reliability styles RER40, RER45, RER50, and RER55 resistors. These resistors are noninductively wound.

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MIL-PRF-39009/2C

4.2 Dielectric withstanding voltage.

4.2.1 At atmospheric pressure. The magnitude of the test voltage shall be as specified in table V.

TABLE V. Dielectric withstanding voltages at atmospheric pressure.

Resistor

Dielectric withstanding

style

test voltage

Volts (rms)

1,000

RER40

1,000

RER45

1,000

RER50

2,000

RER55

4.2.2 At reduced barometric pressure. The magnitude of the test voltage shall be 500 volts.

4.3 Terminal strength. The direct pull shall be as specified in table VI.

TABLE VI. Direct pull.

Resistor

Direct pull

style

(pounds)

RER40

5 +0, -1/4

RER45

5 +0, -1/4

RER50

10 +0, -1/2

RER55

10 +0, -1/2

4.4 Chassis dimensions. The chassis dimensions shall be as specified in table VII.

TABLE VII. Chassis dimensions.

Resistor

Length,

Thickness

style

width,

and height

Inches

Inch

6x4x2

.04

RER40

6x4x2

.04

RER45

7x5x2

.04

RER50

7x5x2

.04

RER55