The development and evaluation of a high-contact-density burn-in socket for a pinless module with 1156 terminals and an intended useful life of at least 1000 h at 200 degrees C are described. Characterization and stress data for wire button contacts realized in various metallurgies along with results for elastomer contacts are presented. Contact integrity and resistance were monitored while under temperature and current accelerated stress. A molybdenum wire button prototype socket was successfully constructed and stress tested.
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