Hermetically sealed aluminum package for hybrid microcircuits

Details Hermetically sealed aluminum package for hybrid microcircuits Hermetically sealed aluminum package for hybrid microcircuits

1990-06-11

1993-06-29

Picard, Leo P.

Electricity: conductors and insulators

Boxes and housings

Hermetic sealed envelope type

174152GM, 228113, 228114, 156 735, H01L 2302, H01B 1726

Patent

active

052236722

ABSTRACT:
A hybrid package in which Kovar feedthroughs are friction welded to an aluminum housing. Friction welding produces a very strong weld joint which resists the thermal stresses induced between the aluminum housing and Kovar feedthroughs by the large difference in their coefficients of thermal expansion. Friction welding also produces a very small heat affected zone, while brazing, soldering and other types of welding produce large heat affected zones which can cause annealing problems. The aluminum package is easy to machine, light in weight and provides good heat dissipation for the hybrid microcircuits in the package.

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