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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MIL-R-19365E

1.2.1.3.2 Resistance values. The minimum and maximum nominal total resistance values are accordance with table III.

TABLE III. Minimum and maximum resistance values.

Style

Resistance range in ohms

Minimum

Maximum

RX29

RX32

RX33

RX35

RX36

RX37

RX38

RX47

470

910

1,500

3,600

5,100

8,200

11,000

15,000

1.2.2 Power ratings. The nominal power ratings for the various styles are in accordance with table IV.

TABLE IV. Nominal power ratings. 1/

s (watts)

stic V

1/ Free space is predicated on horizontal mounting of the resistors with no object closer than 12 inches to the resistor, except the mounting base which is not closer than 2 inches below the resistors. Still air is air with no circulation other than created by the heat of the resistor being operated.

2. APPLICABLE DOCUMENTS

2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed.

2.2 Government documents.

2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract (see 6.2).

FEDERAL STANDARDS

FED-STD-H28 - Screw Thread Standards for Federal Services. DEPARTMENT OF DEFENSE STANDARDS

MIL-STD-202 - Tests Methods for Electronic and Electrical Components Parts. MIL-STD-1285 - Marking of Electrical and Electronic Parts.