Predictive modeling of board level shock-impact reliability of the HVQFN-family

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Abstract

A semi-empirical model is derived to predict the board level drop-impact lifetime of HVQFN-packages soldered on a printed circuit board. The strain that evolves in the soldered interconnections is evaluated by a finite element model and related to the experimentally determined lifetime. The result is a power law and it is compared to literature data. In addition, a measure for the strain on the board is obtained analytically and compared with the experimental data. Here, too, dependence in the form of a power law is found. The combination of both results strongly suggests a near-linear relationship between the strain in the solder and the strain in the board. © 2009 Elsevier Ltd. All rights reserved.

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de Vries, J., Balemans, W., & van Driel, W. D. (2010). Predictive modeling of board level shock-impact reliability of the HVQFN-family. Microelectronics Reliability, 50(2), 228–234. https://doi.org/10.1016/j.microrel.2009.10.015

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