Hermetically sealed package for a high power hybrid circuit

Details Hermetically sealed package for a high power hybrid circuit Hermetically sealed package for a high power hybrid circuit

1994-08-02

1997-12-23

Niebling, John

Fishing, trapping, and vermin destroying

437221, 257698, 257700, H01L 2160

Patent

active

057007241

ABSTRACT:
A metal ring frame, having co-fired ceramic inserts, is hermetically sealed to a copper/molybdenum base using a brazing alloy having a melting temperature which is approximately the cross-over temperature for the TCE curves of the base and ring frame. Preferably the base contains at least 20% copper by weight. The brazing alloy is a silver/copper alloy such as 56% Ag, 22% Cu, 17% Zn and 5% Sn, or one with a higher brazing temperature such as 78/22 Ag/Cu, and is used for brazing both the inserts into the frame and the frame onto the base.

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"Standard Specification for Steel Bars, Carbon Cold Finished, Standard Quality", pp. 18-21, ASTM Designation: A 108-90a (Sep. 1990).
"The Use of Multilayer Ceramic Inserts for Total Mitigation of the Cracked Bead Problem" By J. Carter; Hybrid Circuit Technology, Oct. 1990, pp. 43-46.

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