Method of making a lead frame

Details Method of making a lead frame Method of making a lead frame

1977-11-18

1980-05-27

Husar, Francis S.

Metal working

Method of mechanical manufacture

Electrical device making

29885, 29589, 357 70, H01R 4300

Patent

active

042043174

ABSTRACT:
The method of making a metal lead frame wherein a metal lead frame blank is stamped or etched from a metal strip so as to provide a die attach pad and a plurality of leads attached to the pad. Prior to separating the leads from the pad a retainer is applied to the leads adjacent the pad so that the leads are held in fixed positions during and after their separation from the pad.

REFERENCES:
patent: 3271625 (1966-09-01), Caracciolo
patent: 3484533 (1969-12-01), Kauffman
patent: 3544857 (1970-12-01), Byrne et al.
patent: 3689336 (1972-09-01), Bunker et al.
patent: 3778887 (1973-12-01), Suzuki et al.
patent: 4089733 (1978-05-01), Zimmerman
Electronics, pp. 36-37, Jul. 24, 1967.

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