MIL-PRF-94 Resistors, Variable, Composition General Specification ForThis 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 degrees C and are capable for continuous operation when properly derated, at a maximum temperature of 120 degrees C \(see 6.9\).

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INCH-POUND

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

70OC, and are capable for continuous operation when properly derated, at a maximum temperature of 120OC

(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

103

⏐

Temperature and

Operating

Style

Bushing

Switch

Resistance

moisture resistance

shaft

(1.2.1.1)

(1.2.1.2)

(1.2.1.3)

characteristic

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

Standard

Locking

Shaft and panel sealed (standard)

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.

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 https://assist.daps.dla.mil.

AMSC/NA

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