MIL-PRF-39035/4G
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
https://assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D,
Philadelphia, PA 19111-5094).
2.3 Order of precedence. 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. 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 P- type terminal.
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.
3.5.1 Resistance value deviations. All maximum deviations as specified in this section are to be considered
absolute limits with the exception of the contact resistance adjustments.
3.6 Actual effective electrical travel. Actual effective electrical travel shall be 215 degrees, minimum.
3.7 Torque.
3.7.1 Operating. Operating torque shall be a maximum of 2.0 ounces-inches.
3.7.2 Stop. The stop shall withstand a force of 4 ounce-inches when this amount of torque is applied through the
operating shaft to the stop.
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 6.5).
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