Unified model of 1-D pulsed heating, combining Wunsch-Bell with the Dwyer curve: This paper is co-copyrighted by Intel Corporation and the ESD association

Abstract

Heat flow from a surface source to a sink at a specified depth, using uniform "effective" materials parameters, models many power-to-fail (Dwyer) curves, while capturing the Wunsch-Bell relation as the infinite depth limit. A fast-converging series produces the complete thermal impedance function and predicts peak temperature for arbitrary power waveforms.