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Erschienen in: Journal of Materials Science: Materials in Electronics 3/2014

01.03.2014

Reliability of lead-free solder joints in CSP device under thermal cycling

verfasst von: Liang Zhang, Lei Sun, Yong-huan Guo, Cheng-wen He

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 3/2014

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Abstract

Finite element method and Garofalo–Arrheninus creep model were combined and used to evaluate the reliability of different lead-free solder joints (SnAgCu, SnAg, SnSb and SnZn) and SnPb solder joints in chip scale package (CSP) 14 × 14 device under thermal cyclic loading. The results show that von Mises stress and equivalent creep strain in each of the four lead-free solder joints and SnPb solder joints were strongly different, increasing in the order SnPb < SnAg < SnSb < SnZn < SnAgCu. It is found that maximum stress–strain concentrates on the top-surface of corner solder joints in the CSP device for all solder joints, and SnAgCu solder joints shows the highest fatigue life among those five kinds of solder joints.

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Metadaten
Titel
Reliability of lead-free solder joints in CSP device under thermal cycling
verfasst von
Liang Zhang
Lei Sun
Yong-huan Guo
Cheng-wen He
Publikationsdatum
01.03.2014
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 3/2014
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-014-1711-y

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