Rizvi, M.J., Lu, H. ORCID: https://orcid.org/0000-0002-4392-6562, Bailey, C. ORCID: https://orcid.org/0000-0002-9438-3879, Bevan, E., Poutney, N. and Coates, J. (2010) Finite element modelling of failures in thick film chip resistor solder joints. In: Microsystems Packaging Assembly and Circuits Technology Conference (IMPACT), 2010. in: Microsystems Packaging Assembly and Circuits Technology Conference (IMPACT), 2010 5th International Issue Date: 20-22 Oct. 2010 . IEEE Xplore Digital Library, Taipei, pp. 1-4. ISBN 978-1-4244-9785-0 (electronic), 978-1-4244-9783-6 (print) ISSN 2150-5934 (doi:10.1109/IMPACT.2010.5699488)

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Abstract

In this paper, thick film chip resistors with two different types of solder alloys namely SnPb and SnAgCu have been evaluated for the effects of the solder alloy elemental composition on the solder joint failures under cyclic temperature loading conditions. The creep properties of both solders have been modelled using the Garofalo equation and the creep strain energy density has been extracted and used as the damage indicator for lifetime prediction. Three thick film chip resistors of different sizes have been modelled and the effect of device size on the failures in the solder joints has been analysed. In addition, both thermal cycling and thermal shock conditions have been modelled in order to simulate effects of extreme harsh conditions and the total damage has been calculated using the Miner's law of linear damage accumulation. Based on the modelling results, the most vulnerable places in the solder joints where the failures may originate and propagate have been identified. Empirical lifetime models have used to predict the life time of the resistor solder joints.

Item Type:	Conference Proceedings
Title of Proceedings:	Microsystems Packaging Assembly and Circuits Technology Conference (IMPACT), 2010
Uncontrolled Keywords:	thick film chip resistors, SnPb and SnAgCu (solder alloys), Garofalo equation,Miner's law of linear damage accumulation
Subjects:	Q Science > Q Science (General) Q Science > QA Mathematics Q Science > QA Mathematics > QA75 Electronic computers. Computer science T Technology > T Technology (General)
Pre-2014 Departments:	School of Computing & Mathematical Sciences School of Computing & Mathematical Sciences > Department of Computer Systems Technology
Related URLs:	Publisher Organisation Organisation
Last Modified:	20 Mar 2019 11:54
URI:	http://gala.gre.ac.uk/id/eprint/7627

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