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Robust Design of Third-Level Packaging in Portable Electronics: Solder Joint Reliability Under Dynamic Mechanical Loading

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1 Author(s)
Canumalla, S. ; Texas Instrum., Inc., Dallas, TX, USA

Solder joint reliability issues that can be identified only at the system level are notoriously difficult to resolve in a timely manner using trial and error experimentation alone. The particular case of solder joint reliability of a side switch in a phone subjected to drop-impact is addressed. An approach employing Response Surface Methodology (RSM) is proposed to solve reliability and robust design problems in advanced packaging. A 10x improvement in the drop test failure rate is demonstrated with a minimum of trial and error experimentation. Technical contributions are a) a novel drop life response function derived from strain energy principles, and b) an approach to address package reliability issues at the system level.

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Components and Packaging Technologies, IEEE Transactions on  (Volume:32 ,  Issue: 2 )