Document ID:	MIL-PRF-39015       Scroll down to access document images

Overview

Title:  Resistor, Variable, Wirewound, (Lead Screw Actuated), Nonestablished Reliability, and Established Reliability, General Specification for Scope:  This specification covers the general requirements for nonestablished reliability (non-ER) and established reliability (ER), lead screw actuated; wire wound variable resistors with a contact bearing uniformly over the surface of the entire resistive element, wound linearly, when positioned by a multiturn lead screw actuator. These resistors are capable of full load operation (when the maximum resistance is engaged), at a maximum temperature of 85ºC and are capable for continuous operation, when properly derated, at maximum temperature of 150ºC (see 3.6), with a resistance tolerance of ±5 percent. The ER resistors have life failure rate (FR) levels ranging from 1.0 percent to 0.001 percent per 1,000 hours (see 1.2.1.4). These FR levels are established at a 60 percent confidence level on the basis of life tests. Status:  Active Document Date:  02-SEP-2022         Next Review Due:  01-SEP-2027 FSC/Area:  5905 Doc Category:   Performance Specification   Qualification

Responsibilities

Lead Standardization Activity:  CC  DLA Land and Maritime     Preparing Activity: CC  DLA Land and Maritime Coordination:  Full   Army Custodian:  CR   US Army Combat Capabilities Development Command, C5ISR Center   Navy Custodian:  EC   Naval Information Warfare Systems Command   Air Force Custodian:  85   Air Force Life Cycle Management Center - Electronic Components, Wire and Ca   DLA Custodian:  CC   DLA Land and Maritime

Amendments to military specifications or specification sheets issued after August 1, 2003 are incorporated in the modified document.

Revision History

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