Leak testing hermetically sealed electronic articles

Details Leak testing hermetically sealed electronic articles Leak testing hermetically sealed electronic articles

1979-11-02

1981-08-11

Goldberg, Gerald

Measuring and testing

With fluid pressure

Leakage

73 407, G01M 316

Patent

active

042827442

ABSTRACT:
Hermetically sealed electronic articles (11) such as, for example, diodes are leak tested by exposing the articles to a fluid (28) under pressure. The fluid is capable of altering the electrical characteristics of the articles to a value outside of an acceptable range of values upon penetrating through faulty hermetic seals of the articles (11). After such exposure the articles (11) are routinely tested and the articles with values of their characteristics outside the range of acceptable values are identified or discarded. Ethylene glycol is an example of a preferred fluid (28) in that it has conductive properties which significantly increase the reverse bias leakage current of the diodes.

REFERENCES:
patent: 2412192 (1946-12-01), Agnew
patent: 3416359 (1968-12-01), Durbin et al.
patent: 3738158 (1973-06-01), Farrell et al.
patent: 3802251 (1974-04-01), Durr
patent: 3888111 (1975-06-01), Craig
patent: 4154092 (1979-05-01), White et al.
patent: 4158960 (1979-06-01), White et al.
patent: 4164703 (1979-08-01), Boggs et al.

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