MIL-R-19365 Resistor, Adjustable, Wirewound, PowerThis specification covers power, adjustable, wirewound, resistors for use in electrical, electronic, communication, and associated equipment. These resistors have a resistance range of 1 ohm to 15,000 ohms, inclusive, and a resistance tolerance of ┬▒5 percent. The power ratings cover a range of 11 watts to 210 watts, inclusive. These power ratings are applicable only when the maximum resistance is engaged in the circuit. When only a portion of the resistance element is engaged, the power rating is reduced in approximately the same proportion as the resistance.

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INCH-POUND MIL-R-19365E

11 February 2008

SUPERSEDING MIL-R-19365D

25 March 2002

MILITARY SPECIFICATION

RESISTORS, ADJUSTABLE, WIREWOUND, POWER INACTIVE FOR DESIGN AFTER

24 NOVEMBER 1970.

This specification is approved for use by all Departments and Agencies of the Department of Defense.

1.  SCOPE

1.1  Scope.  This specification covers power, wirewound, adjustable resistors for use in electrical, electronic, communication, and associated equipment.  These resistors have a resistance range of 1 ohm to 15,000 ohms, inclusive, and a resistance tolerance of ±5 percent.  The power ratings cover a range of 11 watts to 210 watts, inclusive.  These power ratings are applicable only when the maximum resistance is engaged in the circuit.  When only a portion of the resistance element is engaged, the power rating is reduced in approximately the same proportion as the resistance.

1.2  Classification.

1.2.1  Part or Identifying Number (PIN).  The PIN is as follows:

1.2.1.1  Style.  The style is identified by the two letter symbol RX followed by a two digit number, the letters identify power, wire wound, adjustable resistors, and the number identifies the size of the resistor.

1.2.1.2  Characteristic.  The characteristic is identified by a single letter which identifies the maximum continuous operating temperature and the high ambient temperature derating of resistors, in accordance with table I.

TABLE I.  Characteristic.

1/  This temperature is also the maximum permissible hotspot

surface temperature.

Comments, suggestions, or questions on this document should be addressed to: Defense Supply Center, Columbus, ATTN: DSCC-VAT, Post Office Box 3990, Columbus, Ohio 43218-3990 or by email Resistor@dla.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https://assist.daps.dla.mil/ .

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