Hermetic IC package moisture tester

Details Hermetic IC package moisture tester Hermetic IC package moisture tester

1992-02-20

1993-07-20

Williams, Hezron E.

Measuring and testing

Testing sealed receptacle

73 493, G01M 332

Patent

active

052283305

ABSTRACT:
The amount of extraneous gas within a hermetic sealed package, such as water vapor, is measured by measuring the total gas pressure within the package. This gas pressure is compared to a correlation made of expected total pressure within a package to deviations to that total pressure to determine the amount of extraneous gas. The correlation itself is derived statistically by comparing samples of actual total pressure to expected total pressure. These samples are then used to statistically produce the above correlation which is then used in actual testing.

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