Comments, suggestions, or questions on this document should be addressed to Defense Supply Center, Columbus,
ATTN: DSCC/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 http://assist.daps.dla.mil.
AMSC/NA FSC 5905
MIL-PRF-94G
2 June 2006
SUPERSEDING
MIL-PRF-94F
16 February 2001
PERFORMANCE SPECIFICATION
RESISTORS, VARIABLE, COMPOSITION
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 variable resistors having a composition resistance element shaped in an
arc, and a contact bearing uniformly thereon, so that a change in resistance is produced between the terminal of the
contact and the terminal of either end of the resistance element when the operating shaft is turned. These resistors
are capable of full load operation (where maximum resistance is engaged) at a maximum ambient temperature of
70
O
C, and are capable for continuous operation when properly derated, at a maximum temperature of 120
O
C
(see 6.9).
1.2 Classification
.
1.2.1 Part or Identifying number (PIN)
. The PIN is in the following form and as specified (see 3.1 and 6.2):
RV2
N A Y SD 103 A
⏐ ⏐ ⏐ ⏐ ⏐ ⏐ ⏐
⏐ ⏐ ⏐ ⏐ ⏐ ⏐ ⏐
Style
(1.2.1.1)
Bushing
(1.2.1.2)
Switch
(1.2.1.3)
Temperature and
moisture resistance
characteristic
(1.2.1.4)
Operating
shaft
(1.2.1.5)
Resistance
(1.2.1.6)
Resistance
characteristic
(1.2.1.7)
1.2.1.1 Style
. The style is identified by the two letter symbol “RV” followed by a one digit number. The letters
identify composition, variable resistors and the number identifies the size and power rating.
1.2.1.2 Bushing
. The type of bushing is identified by a single letter in accordance with table I.
TABLE I. Bushing
.
Symbol Bushing
N Standard
L Locking
S Shaft and panel sealed (standard)
T Shaft and panel sealed (locking)
1.2.1.3 Switch
. The type of switch or absence of a switch is identified by a single letter in accordance with table II.
INCH-POUND
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