This part of IEC 60749 provides a highly accelerated temperature and humidity stress test (HAST) for the purpose of evaluating the reliability of non-hermetic packaged semicondutor devices in humid environments.
DS/EN 60749-4:2003 history
2004DS/EN 60749-4/Corr.1:2004 Semiconductor devices - Mechanical and climatic test methods - Part 4: Damp heat, steady state, highly accelerated stress test (HAST)
2003DS/EN 60749-4:2003 Semiconductor devices - Mechanical and climatic test methods - Part 4: Damp heat, steady state, highly accelerated stress test (HAST)