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Computer modelling analysis of the globtop's effects on aluminium wirebond reliability

Computer modelling analysis of the globtop's effects on aluminium wirebond reliability

Lu, Hua, Loh, Wei-Sun, Bailey, Christopher and Johnson, C. Mark (2008) Computer modelling analysis of the globtop's effects on aluminium wirebond reliability. 2nd Electronics System-Integration Technology Conference, 2008. ESTC 2008. Institute of Electrical and Electronics Engineers, Inc., Piscataway, NJ, USA, pp. 1369-1373. ISBN 978-1-4244-2814-4 (Print) 978-1-4244-2813-7 (Online) (doi:10.1109/ESTC.2008.4684555)

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Abstract

In power electronics modules, heavy aluminium wires, i.e. wire diameters greater than 100 microns, are bonded to the active semiconductor devices and conductor metallization to form electric circuits of the power electronic module. Due to the high currents that may flow through these wires, a single connection usually contains several wires and thus, a large number of wires are used in a power electronics module. Under normal operation or test condition, a significant amount of stresses and strains induced in the wire and bonding interfaces, resulting in failure over time. In this paper, computer modelling techniques are used to analyse the effect of globtop design on the reliability of aluminium wirebonds under cyclic thermal-mechanical loading conditions. The results will show the sensitivity of the reliability of the wirebonds to the changes in the geometry and the material properties of the wirebond globtop.

Item Type: Book Section
Additional Information: This paper forms part of the Proceedings of the 2nd Electronics System-Integration Technology Conference, 2008 (ESTC 2008), held 1-4 September 2008, in Greenwich, London, UK. The event was organised by the Computational Mechanics and Reliability Group of the University of Greenwich and the UK and RI Chapter of IEEE Components, Packaging and Manufacturing Technology (CPMT) Society with additional input from the IEEE and iMAPS Europe and programme sponsorship from the Innovative Electronics Manufacturing Research Centre (IeMRC). ©2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
Uncontrolled Keywords: power electronics modules, globtop design, computer modelling, aluminium wirebonds
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Q Science > QA Mathematics
Pre-2014 Departments: School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis
School of Computing & Mathematical Sciences
School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Computational Mechanics & Reliability Group
School of Computing & Mathematical Sciences > Department of Computer Systems Technology
School of Computing & Mathematical Sciences > Department of Mathematical Sciences
Related URLs:
Last Modified: 14 Oct 2016 09:03
URI: http://gala.gre.ac.uk/id/eprint/1252

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