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Title	Document #	Date
ACCELERATED MOISTURE RESISTANCE - UNBIASED HAST	JESD22-A118B.01	May 2021
The Unbiased HAST is performed for the purpose of evaluating the reliability of nonhermetic packaged solid-state devices in humid environments. It is a highly accelerated test which employs temperature and humidity under noncondensing conditions to accelerate the penetration of moisture through the external protective material (encapsulant or seal) or along the interface between the external protective material and the metallic conductors that pass through it. Bias is not applied in this test to ensure the failure mechanisms potentially overshadowed by bias can be uncovered (e.g., galvanic corrosion). This test is used to identify failure mechanisms internal to the package and is destructive. Committee(s): JC-14.1 Free download. Registration or login required.
ACCELERATED MOISTURE RESISTANCE - UNBIASED AUTOCLAVE Status: Reaffirmed January 2021	JESD22-A102E	Jul 2015
This test allows the user to evaluate the moisture resistance of nonhermetic packaged solid state devices. The Unbiased Autoclave Test is performed to evaluate the moisture resistance integrity of non-hermetic packaged solid state devices using moisture condensing or moisture saturated steam environments. It is a highly accelerated test that employs conditions of pressure, humidity and temperature under condensing conditions to accelerate moisture penetration through the external protective material (encapsulant or seal) or along the interface between the external protective material and the metallic conductors passing through it. This test is used to identify failure mechanisms internal to the package and is destructive. Committee(s): JC-14.1 Free download. Registration or login required.