中国空间科学技术

中国空间科学技术

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卫星用电容器的性能、特点和应用可靠性

彭宝霞，薛仁经   

  1. 北京卫星环境工程研究所，北京控制工程研究所
  • 发布日期:1994-02-25

PERFORMANCES FEATURES AND APPLIED RELIABILITY OF SATELLITE-USED CAPACITORS

Peng Baoxia(Beijing Institute of Satellite Environmental Engineering,Beijing 100029)Xue Renjing(Beijing Institute of Control Engineering, Beijing 100080)   

  • Online:1994-02-25

摘要： 介绍星用电容器选用要点、失效实例，以及如何提高固但、液但、陶瓷电容器的应用可靠性。还谈及四个问题：①固钽不能用在电源滤波器中；②因钽的可靠性与使用线路阻抗有关，如果线路阻抗越小则可靠性越差；③液钽易发生振动失效，有些在振动激励下可能成为瞬息电势源（间歇短路）；④多层陶瓷电容器的低压失效。分析了这些特殊失效现象及失效机理，提出可能采用的筛选方法。

关键词: 电容器, 可靠性, 失效机理

Abstract: This paper presents the selection rules of satellite-used capacitors failure examples and the methods of raising applied reliability of tantalum capacitors.Four viewpoints are put forward:①Solid state tantalum capacitors should not he used in power supply filters;②The reliability of solid state tantalum capacitors is related to the serial resistance in a circuit;③Liquid state tantalum capacitors are susceptible to vibration, and it is possible to produce transient electric potential;④ There is low voltage failure in multi-lager ceramic capacitors.Finally by analysing the special failure phenomenon and mechanism of capacitors, some available screening methods are proposed.