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Erschienen in: Journal of Materials Science: Materials in Electronics 3/2016

25.11.2015

Predicted stresses in ball-grid-array (BGA) and column-grid-array (CGA) interconnections in a mirror-like package design

verfasst von: E. Suhir, R. Ghaffarian, J. Nicolics

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 3/2016

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Abstract

There is an obvious incentive for using bow-free (temperature change insensitive) assemblies in various areas of engineering, including electron device and electronic packaging fields. The induced stresses in a bow-free assembly could be, however, rather high, considerably higher than in an assembly, whose bow is not restricted. The simplest and trivial case of a bow-free assembly is a tri-component body, in which the inner component is sandwiched between two identical outer components (“mirror” structure), is addressed in our analysis, and a simple and physically meaningful analytical stress model is suggested. It is concluded that if acceptable stresses (below yield stress of the solder material) are achievable, a mirror (bow-free, temperature-change-insensitive) design should be preferred, because it results in an operationally stable performance of the system.

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Metadaten
Titel
Predicted stresses in ball-grid-array (BGA) and column-grid-array (CGA) interconnections in a mirror-like package design
verfasst von
E. Suhir
R. Ghaffarian
J. Nicolics
Publikationsdatum
25.11.2015
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 3/2016
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-015-4042-8

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