Comparative study of thermal cycling and thermal shocks tests on electronic components reliability

In this work, the first reliability results of Thermal Cycling Tests (TCT, air-air test) and Thermal Shock Tests (TST, liquid-liquid test) on medium power electronic components are discussed. The influence of dwell times, extremes temperatures and mean temperature is investigated. This study is based on statistical data correlated with information coming from failure analysis and confirmed by a basic FEM analysis.