MIL-PRF-11693E

Abstract

This specification covers the general requirements for established reliability (ER) and non-ER capacitors designed for operation with direct current (dc), paper, paper plastic, and plastic (extended foil) dielectric, radio-interference-reduction, feed-through capacitors, hermetically sealed in metal cases (see 6.6.2), for use primarily in broadband, radio-interference suppression application. Capacitors meeting the established reliability requirements specified herein have a maximum failure rate of 1.0 percent per 1,000 hours. This failure rate is established with a 90-percent confidence limit based on the life test parameters specified and are maintained at a 10-percent producer's risk. An acceleration factor of 5:1 has been used to relate the life test data obtained at 140 percent of rated dc voltage at the applicable high test temperature to the rated voltage at the applicable high test temperature.<b><u>Intended Use:</u></b> The capacitors covered by this specification are primarily designed for use in broadband, radiointerference suppression applications. They are military unique due to the fact that they must be able to operate satisfactorily in military systems under the following demanding conditions: -55&#176;C to +85&#176;C or +125&#176;C operating temperature range, 15 Gs of vibration, 50 - 100 Gs of shock, 48 hours of salt spray, 2,000 hours of use at the maximum temperature and 140 percent of rated voltage. In addition these military requirements are verified under a qualification system. Commercial components are not designed to withstand these military environmental conditions.<br>