Metal working – Method of mechanical manufacture – Electrical device making
Patent
1990-09-10
1991-10-22
Arbes, Carl J.
Metal working
Method of mechanical manufacture
Electrical device making
29840, 29846, 2281802, H01K 310
Patent
active
050582658
ABSTRACT:
An advanced co-fired multichip/hybrid package comprises a castellated base, each castellation leading to a pad. An insulated wall rises from the leads, but not from the pads, and is topped by a kovar sealing ring and a layer of solder. A board of chips or other electronic components has a plurality of metallized vias extending therethrough, each via being in registration with a pad and having a ball of solder placed in it. A kovar lid is placed on the wall, and the entire apparatus is fired and cooled. The solder on the wall seals the lid to the wall, and the solder ball in each via bonds the board both mechanically and electrically to the base. No wire bond is needed.
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Arbes Carl J.
Hamann H. Fredrick
Montanye George A.
Rockwell International Corporation
Streeter Tom
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