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EN 60749-4:2017
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Semiconductor devices - Mechanical and climatic test methods - Part 4: Damp heat, steady state, highly accelerated stress test (HAST)
16-06-2017
IEC 60749-4:2017(E) provides a highly accelerated temperature and humidity stress test (HAST) for the purpose of evaluating the reliability of non-hermetic packaged semiconductor devices in humid environments. This edition includes the following significant technical changes with respect to the previous edition:a) clarification of requirements for temperature, relative humidity and duration detailed in Table 1;b) recommendations that current limiting resistor(s) be placed in the test set-up to prevent test board or DUT damage;c) allowance of additional time-to-test delay or return-to-stress delay.
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