Hermetically sealed housing with welding seal

Details Hermetically sealed housing with welding seal Hermetically sealed housing with welding seal

1988-08-15

1990-02-13

James, Andrew J.

Electricity: conductors and insulators

Feedthrough or bushing

Compression

357 84, 174 525, 219 93, 220 67, 220DIG29, H01L 2302, H01L 2310

Patent

active

049011359

ABSTRACT:
A hermetically sealed housing for a solid state device or the like includes a metal header having a mounting surface and a metal cap mounted on the header and over the mounting surface. The cap includes a cup-shaped portion and a flange extending radially outwardly from the rim of the cup-shaped portion. A weld ring projects from a surface of the flange toward the header mounting surface and is welded to the mounting surface. A second ring projects from the surface of the flange and is spaced radially inwardly from the weld ring. The second ring is shorter than the weld ring so that it preferably just contacts the mounting surface of the header. The second ring captures any metal particles splashed from the weld ring during the welding of the cap to the header and thereby minimizes particle induced noise.

REFERENCES:
patent: 2086985 (1937-07-01), Mitchell
patent: 2184939 (1939-12-01), Green
patent: 2796563 (1957-06-01), Ebers et al.
patent: 2975928 (1961-03-01), Roovers
patent: 3962662 (1976-06-01), Bennett

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