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

3.7 Power rating. The power rating shall be 1 watt at +25�C.

3.8 Weight. The maximum weight shall be .00077 pound (.35 grams); for N type resistors the maximum

weight shall be .00154 pound (.70 grams).

3.9 Terminal lead types. This style resistor is available in both solderable (S and N) and weldable (W and

Z) leads.

3.10 Marking. Due to size limitation, this style resistor shall be marked with the minimum marking as

specified.

49R9: Resistance.

SFMJ: Terminal designator, tolerance, failure rate, JAN marking.

8140: Date code.

4. VERIFICATION

4.1 Sampling and inspection. Sampling and inspection shall be in accordance with MIL-PRF-39007.

4.2 Short-time overload. The duration of applied voltage shall be 5 seconds. Voltage applied shall be

equivalent to 5 times rated wattage.

4.3 Dielectric withstanding voltage.

4.3.1 Atmospheric pressure. The magnitude of test voltage shall be 500 volts rms.

4.3.2 Barometric pressure (reduced). The test voltage shall be 100 volts rms.

4.4 Terminal strength. The applied force shall be 5 pounds.

5. PACKAGING

5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract

or order (see 6.2). When packaging of material is to be performed by DoD or in-house contractor personnel,

these personnel need to contact the responsible packaging activity to ascertain packaging requirements.

Packaging requirements are maintained by the Inventory Control Point's packaging activities within the

Military Service or Defense Agency, or within the military service's system commands. Packaging data

retrieval is available from the managing Military Department's or Defense Agency's automated packaging

files, CD-ROM products, or by contacting the responsible packaging activity.

6. NOTES

(This section contains information of a general or explanatory nature that may be helpful, but is not

mandatory.)

6.1 Notes. In addition to the notes specified herein, the notes specified in MIL-PRF-39007 are applicable

to this specification.