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Advanced testing and prognostics of ball grid array components with a stand-alone monitor IC

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4 Author(s)

In this paper, we introduced a new solder-joint fault sensor, SJ Monitor. We gave a brief overview of the mechanics-of-failure, the intermittent behavior of fractured solder bumps, the state-of-the-art in fault detection, details of the SJ Monitor and discussed intermittency mitigation. The primary contributor to fatigue damage of solder joints is thermomechanical stresses. Solder-joint fatigue damage can result in fractures that cause intermittent instances of high-resistance spikes that are hard to diagnose.

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IEEE Instrumentation & Measurement Magazine  (Volume:13 ,  Issue: 4 )