Method of making plastic sealed cavity molded type semi-conducto

Details Method of making plastic sealed cavity molded type semi-conducto Method of making plastic sealed cavity molded type semi-conducto

1974-08-23

1976-04-06

White, Robert F.

Metal working

Method of mechanical manufacture

Assembling or joining

29590, 264265, 264272, 357 67, 357 72, 156153, 156242, H01L 21304, B29C 602

Patent

active

039479536

ABSTRACT:
The external lead frame for a plastic sealed, cavity molded type semi-conductor device is formed of Phospor bronze, with the bronze lead frame liquid honed, it is pre-heated and supported in a mold cavity so as to be embedded into a powder epoxy resin molded header with improved sealing between the Phospor bronze lead frame in the header molded thereabove.

REFERENCES:
patent: 2955031 (1960-10-01), Bliton et al.
patent: 3504457 (1970-04-01), Jacobsen et al.
patent: 3676748 (1972-07-01), Kobayashi et al.
patent: 3693252 (1972-09-01), Robertson et al.
patent: 3706840 (1972-12-01), Moyle
patent: 3767839 (1973-10-01), Beal
"Liquid Honing", Vapor Blast Manufacturing Company, Milwaukee, Wisc., copyright 1946, 8 pages.

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