CHEN When hua1, KONG Xiang ze1, QIAN Ping1, GAO Liang2, ZHU Zhi peng1

 

(1.Zhejiang Province’s Key Laboratory of Reliability Technology for Mechanical and Electrical Product,

 

Zhejiang Sci Tech University, Hangzhou 310018, China;

 

2.College of Mechanical and Electrical Engineering, Sichuan Agricultural University, Ya’an 625014, China)

 

 

Abstract: Aiming at figuring out the effects of insertion extraction on storage life evaluation of electrical connector, and accurately guiding the practice, the Y11P 1419 electrical connector was taken as the object. The contact failure, which was caused by oxidation corrosion and insertionextraction, was analyzed. Moreover, the accelerated degradation test was designed. The observation of test phenomena, the statistical analysis of data, and the micro morphology analysis of receptacle by SEM and EDS, were researched. And the effects of insertion extraction during storage were revealed: regular insertion extraction caused jump of resistance, were of gold layer and oxide film, exposed of copper substrate, it can accelerate of oxide etched for the contact area. The research results show that insertion extraction can accelerate the performance degradation for the storage electrical connector. improving the accuracy of the storage life evaluation, the effects of insertion extraction must be considered.

 

Key words: storage; electrical connector; insertion extraction; accelerated degradation; contact resistance