MIL-PRF-39035/3F
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).
DEPARTMENT OF DEFENSE SPECIFICATION
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Resistors, Variable, Nonwirewound (Adjustment Type),
Nonestablished Reliability, and Established Reliability, General
Specification for
(Copies of these documents are available online at https://assist.daps.dla.mil/quicksearch/ or from the
Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094).
2.3 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the
text of this document and the references cited herein (except for related specification sheets), the text of this
document takes precedence unless otherwise noted. Nothing in this document, however, supersedes applicable
laws and regulations unless a specific exemption has been obtained.
3. REQUIREMENTS
3.1 General. The requirements for acquiring the product described herein shall consist of this document and
3.2 Interface and physical dimension requirements. Resistors shall meet the interface and physical dimensions
specified on figure 1.
3.3 Power rating. The power rating shall be 1/4 watt for characteristics F and H.
3.4 Terminals. Characteristics F and H are available in A, B, C, P, W, and X type terminals.
3.5 Nominal resistance value and maximum rated ac or dc working voltage. Nominal resistance values and
maximum rated ac or dc working voltages shall be as specified in table I.
3.6 Actual effective electrical travel. Actual effective electrical travel shall be 10 turns minimum, and 25 turns
maximum.
3.7 Operating torque. Operating torque shall be a maximum of 3 ounces-inches.
3.8 Maximum voltage. Maximum rated ac or dc working voltage shall be 200 volts.
3.9 Pure tin. The use of pure tin, as an underplate or final finish, is prohibited both internally and externally. Tin
content of resistor components and solder shall not exceed 97 percent, by mass. Tin shall be alloyed with a
minimum of 3 percent lead, by mass (see 6.3).
4. VERIFICATION
4.1 Sampling and inspection. Sampling and inspection shall be in accordance with MIL-PRF-39035, and as
specified herein.
4.2 Dielectric withstanding voltage. In the dielectric withstanding voltage test, the applied potential shall be
600 volts rms at atmospheric pressure, and 250 volts rms at reduced barometric pressure.
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