MIL-PRF-39007-9 Resistor, Fixed, Wire-Wound \(Power Type\), Nonestablished Reliability, Established Reliability, And Space Level Style Rwr81This specification covers the associated requirements for style RWR81, nonestablished reliability, established reliability, and space level, power type, wire-wound, fixed, resistor. These resistors are available with terminal types "S" \(solderable, inductively wound\), "W" \(weldable, inductively wound\), "N" \(solderable, noninductively wound\), and "Z" \(weldable, noninductively wound\).

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MIL-PRF-39007/9J

Table I. Resistance temperature characteristic.

Resistance range

Resistance temperature characteristic

(ohms)

(Reference to 25�C)

0.1≤R≤0.499

�650 ppm

0.499<R≤1.0

�400 ppm

1.0<R≤10

�50 ppm

10<R

�20 ppm

Inches

.0015

0.038

.016

0.41

.0200

0.508

.031

0.79

.062

1.57

.085

2.16

.250

6.35

1.500

38.10

Standard

Dimensions

style

A �.031

B (min)

C �.0015

D �.020

RWR81

.250

1.500

.0200

.085

NOTES:

1. Dimensions are in inches.

2. Metric equivalents are given for general information only.

3. Dimension A is clean lead to clean lead.

4. Lead concentric tolerance is to be measured at the point of lead egress from the resistor body to be

within .016 TIR.

5. Lead length for tape and reel packaging shall be 1 inch minimum.

FIGURE 1. Style RWR78 resistor.