Manufacturing method for lead frame

Details Manufacturing method for lead frame Manufacturing method for lead frame

1994-11-30

1996-02-20

Powell, William

Etching a substrate: processes

Forming or treating electrical conductor article

Forming or treating lead frame or beam lead

216 41, B44C 122

Patent

active

054922330

ABSTRACT:
Disclosed herein is a manufacturing method for a lead frame, including the steps of forming a lead element, forming masks on a first surface and a second surface of the lead element, etching the lead element, and removing the masks. According to this method, the lead frame can be manufactured at low costs without the necessity of machining of the lead element.

REFERENCES:
patent: 4289846 (1981-09-01), Parks et al.
patent: 4711700 (1987-12-01), Cusack
patent: 5004521 (1991-04-01), Makino

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