Electrothermal simulators are efficient tools to study ElectroStatic Discharge (ESD) problems. We use the numerical 2D simulator TMA-MEDICI [1] to simulate electrothermal problems. We propose here an analysis of thermal breakdown occurrence observed on a PIN diode under reverse ESD pulse. Experimental studies and analytical models have already been proposed [2,3,4]. Nevertheless, simulations coupled with experimental results allowed the study of the failure mode evolution. This new approch led to a better understanding of the main physical mechanisms involved in thermal breakdown phenomenon.
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