Electricity: conductors and insulators – Boxes and housings – Hermetic sealed envelope type
Patent
1989-05-22
1993-09-28
Picard, Leo P.
Electricity: conductors and insulators
Boxes and housings
Hermetic sealed envelope type
174 17VA, 220DIG27, H05K 503
Patent
active
052488489
ABSTRACT:
An electronic device package includes a portion that functions as a membrane to allow small molecules, such as gas molecules, to relatively freely traverse the housing boundary, while simultaneously substantially preventing large molecules, such as liquid molecules, from entering the confines of the housing. As a result, the package can be readily used in reflow processing without risking damage to the boundary integrity between the housing and the support surface that supports both the electronic device and the housing.
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patent: 4974745 (1990-12-01), Jocham
patent: 4980550 (1990-12-01), Port
Kornowski Robert R.
Missele Carl
Hayes John W.
Motorola Inc.
Parmelee Steven G.
Picard Leo P.
Tone D. A.
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