Resistors, Fixed, Wirewound (Accurate), Nonestablished Reliability, Established Reliability, General Specification for

Published by	Publication Date	Number of Pages
MIL	09/27/2013	39

Category: MIL

Description

MIL MIL-PRF-39005G – Resistors, Fixed, Wirewound (Accurate), Nonestablished Reliability, Established Reliability, General Specification for

This specification covers the general requirements for nonestablished reliability (non-ER), established reliability (ER), accurate, wire-wound, fixed resistors that have a maximum resistance tolerance of 1 percent and a high degree of stability with respect to time under specified environmental conditions. The resistors are capable for continuous full-load (or voltage) operation at any ambient temperature up to 125å¡C, and when derated, up to 145å¡C (see 6.5). They are not capable for application where the alternating current (ac) characteristics are of critical importance. ER resistors have life failure rates (FR) ranging from 1.0 percent to 0.001 percent per 1,000 hours (see 1.2.1.5). These FR are established at 60-percent confidence level on the basis of the life tests. The FR, identified by the appropriate symbol, is referred to operation at full rated voltage and temperature.