Comments, suggestions, or questions on this document should be addressed to DLA Land and Maritime,
ATTN: VAT, Post Office Box 3990, Columbus, OH 43218-3990, or emailed to 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
INCH-POUND
MIL-PRF-22097J
w/Amendment 2
28 January 2011
SUPERSEDING
MIL-PRF-22097J
w/Amendment 1
2 September 2010
PERFORMANCE SPECIFICATION
RESISTOR, VARIABLE, NONWIREWOUND,
(ADJUSTMENT TYPE)
GENERAL SPECIFICATION FOR
This specification is approved for use by all Departments
and Agencies of the Department of Defense.
1. SCOPE
1.1 Scope. This specification covers the general requirements for multiturn lead screw actuated and single turn
nonwirewound, variable resistors with a contact bearing uniformly over the entire surface of the entire resistive
element, when positioned by the actuator. These resistors are capable of full load operation (where maximum
resistance is engaged) at a maximum ambient temperature of 70
O
C and 85
O
C, and are capable for continuous
operation when properly derated, at a maximum temperature of 125
O
C and 150
O
C (see figure 1). These resistors
have a resistance of ±10 percent (see 3.1).
1.2 Classification.
1.2.1 Part or Identifying Number (PIN). The PIN is in the following format, and as specified (see 3.1 and 6.2).
Style
Characteristic
Terminals
Resistance
1.2.1.1 Style. The style is identified by two letter symbol “RJ” followed by a two-digit number. The letters identify
adjustment type, nonwirewound, variable resistors and the number identifies the physical size.
1.2.1.2 Characteristic. The characteristic is identified by a single letter in accordance with table I.
1.2.1.3 Terminals. The terminals are identified by a single letter in accordance with table II.
1.2.1.4 Resistance. The nominal resistance value expressed in ohms is identified by three digit number; the first
two digits represent significant figures and the last digit specifies the number of zeros to follows. The following are
examples of symbols for resistance values:
Downloaded from http://www.everyspec.com
