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JEDEC JESD 22-A118

Accelerated Moisture Resistance - Unbiased HAST

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Organization: JEDEC
Publication Date: 1 December 2000
Status: inactive
Page Count: 9
scope:

The Unbiased HAST is performed for the purpose of evaluating the reliability of non-hermetic packaged solid-state devices in humid environments. It is a highly accelerated test which employs temperature and humidity under non-condensing 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 which 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.

Document History

July 1, 2015
Accelerated Moisture Resistance - Unbiased HAST
This test method applies primarily to moisture resistance evaluations and robustness testing, and may be used as an alternative to unbiased autoclave. Samples are subjected to a noncondensing, humid...
March 1, 2011
Accelerated Moisture Resistance - Unbiased HAST
This test method applies primarily to moisture resistance evaluations and robustness testing, and may be used as an alternative to unbiased autoclave. Samples are subjected to a non-condensing, humid...
JEDEC JESD 22-A118
December 1, 2000
Accelerated Moisture Resistance - Unbiased HAST
The Unbiased HAST is performed for the purpose of evaluating the reliability of non-hermetic packaged solid-state devices in humid environments. It is a highly accelerated test which employs...
December 1, 2000
Accelerated Moisture Resistance - Unbiased HAST
This test method applies primarily to moisture resistance evaluations and robustness testing, and may be used as an alternative to unbiased autoclave. Samples are subjected to a non-condensing, humid...
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