MIL-PRF-39035/2H
DEPARTMENT OF DEFENSE SPECIFICATION
-
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 requirement. Resistors shall be of the interface, and physical dimensions
specified on figure 1.
3.3 Power rating. The power rating shall be 1/2 watt for all characteristics.
3.4 Terminals. Characteristics C, F, and H are available with L-, 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.
3.5.1 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.
TABLE I. Nominal resistance value and maximum rated ac or dc working voltage.
Maximum rated ac or
Maximum rated ac or
Nominal resistance
Nominal resistance
dc working voltage per
dc working voltage per
value
value
characteristics
characteristics
(in Ohms)
(in Ohms)
C, F, and H
C, F, and H
10
2.23
20,000
100
20
3.1
25,000
111
50
5.0
50,000
158
100
7.0
200
10.0
megohms
500
15.8
0.10
223
1,000
22.3
0.20
300
2,000
31.6
0.25
300
5,000
50.0
0.50
300
10,000
70.7
1.00
300
3.6 Actual effective electrical travel. Actual effective electrical travel shall be 15 turns minimum, and 30 turns
maximum.
3.7 Operating torque. Operating torque shall be a maximum of 5 ounces-inches.
3.8 Maximum voltage. Maximum rated ac or dc working voltage shall be 300 volts.
2
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