INCH-POUND
MIL-PRF-39035E
2 April 2008
SUPERSEDING
MIL-PRF-39035D
12 February 1998
PERFORMANCE SPECIFICATION
RESISTOR, VARIABLE, NONWIREWOUND (ADJUSTMENT TYPE),
NONESTABLISHED RELIABILITY, AND ESTABLISHED RELIABILITY,
GENERAL SPECIFICATION FOR
This specification is approved by all Departments
and Agencies of the Department of Defense.
1. SCOPE
1.1 Scope. This specification covers the general requirements for nonestablished reliability (non-ER) and
established reliability (ER), multiturn lead-screw actuated, and single-turn, nonwirewound, variable resistors with a
contact bearing uniformly over the surface of the entire resistive element, when positioned by an actuator. These
resistors are capable of full-load operation (when the maximum resistance is engaged), at a maximum temperature of
150OC, with a resistance tolerance of ±10 percent. The ER resistors will have life failure rate levels ranging from 1.0
to 0.001 percent per 1,000 hours (see 1.2.1.5). These failure rate levels are established at a 60 percent confidence
level maintained at 10 percent producer's risk on the basis of the life tests.
1.2 Classification.
1.2.1 Part or Identifying Number (PIN). The PIN is in the following form, and as specified (see 3.1).
F
P
102
M
RJR24
⏐
⏐
⏐
⏐
⏐
Style
Characteristic
Terminals
Resistance
Product level
(1.2.1.1)
(1.2.1.2)
(1.2.1.3)
(1.2.1.4)
designator
(1.2.1.5)
1.2.1.1 Style. The style is identified by the three letter symbol "RJR" followed by a two-digit number; the letters
identify, adjustment type, nonwirewound, variable resistors, and the number identifies the physical size.
1.2.1.1.1 Performance requirements. Performance requirements are identified in accordance with table I.
1.2.1.2 Characteristic. The characteristic is identified by a single letter which identifies the resistance-temperature
characteristic, maximum ambient temperature at rated wattage, and maximum ambient operating temperature (zero
load) in accordance with table I.
1.2.1.3 Terminals. The terminals are identified by a single letter in accordance with table II.
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/ .
AMSC N/A
FSC 5905
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business