Resumen de Improved and accurate physics-of-failure (PoF) methodology for qualification and lifetime assessment of electronic systems
A.B. Temsamani, S. Kauffmann, Y. Descas, B. Vandevelde, F. Zanon, G. Willems
Abstract Assessing electronic systems' reliability using prediction handbooks (e.g. MIL-HDBK-217) can lead to wrong reliability predictions due to the assumption of a constant failure rate and the inaccuracy of the proposed semi-empirical models. Despite different initiatives since the last version of the most popular handbook MIL-HDBK-217 (1995) no fundamental improvement was realised that makes use of non-constant failure rate statistics – mandatory to model wear-out - and first principles based Physics-of-Failure modelling. Obtaining detailed PoF models requires physical insights and an extended experimental campaign to establish material properties. This is impossible to perform for a specific application. In this paper, we propose a methodology that combines the two approaches to get an improved reliability estimation and allows for a gradual improvement from a prediction handbook based approach to a PoF based reliability assessment. This methodology has been successfully validated on an industrial case.
