NPFC - MIL-PRF-39035
RESISTORS, VARIABLE, NONWIRE WOUND (ADJUSTMENT TYPE), NONESTABLISHED RELIABILITY, AND ESTABLISHED RELIABILITY, GENERAL SPECIFICATION FOR
| Organization: | NPFC |
| Publication Date: | 12 February 1998 |
| Status: | inactive |
| Page Count: | 37 |
scope:
This specification covers the general requirements for nonestablished reliability (non-ER) and established reliability (ER), multitum lead-screw actuated, and single-turn, nonwire-wound, variable resistors with a contact bearing uniformly over the surface of the entire resistive element, when positioned by an actuator. These resistors are capable of full-load operation (when the maximum resistance is engaged), at a maximum temperature of 150°C, with a resistance tolerance of ±10 percent. The ER resistors will have life failure rate levels ranging from 1.0 to 0.001 percent per 1,000 hours (see 1.2.1.5). These failure rate levels are established at a 60-percent confidence level maintained at 10-percent producer's risk on the basis of the life tests.
intended Use:
Resistors covered by this specification are intended for use in electronic equipment, and are used for matching, balancing, adjusting circuit variables in computers, telemetering equipment, and... View More
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