Lead frame with notched lead ends

Details Lead frame with notched lead ends Lead frame with notched lead ends

1997-10-07

1999-09-21

Thomas, Tom

Active solid-state devices (e.g., transistors, solid-state diode

Lead frame

257698, 257776, 257674, 257692, H01L 23495, H01L 2350

Patent

active

059557788

ABSTRACT:
A lead frames has a forked top portion which has a recessed portion adjusted for receipt of a wire so that the wire is so caught by the forked top portion as to prevent the wire from being largely carried. Even if the density of the wires is high, the wires are not carried by the flow of the molten resin so that the wires are kept from contact with each other thereby avoiding short circuits. At the corners, the distance of the adjacent two wires is narrower than the other positions. Notwithstanding, the wires at the corners are also prevented by the forked top portion of the lead frame from being largely carried by the flow of the molten resin so that the wires are kept from contact with each other thereby avoiding short circuit.

REFERENCES:
patent: 4987473 (1991-01-01), Johnson
patent: 5463250 (1995-10-01), Nguyen et al.
patent: 5530281 (1996-06-01), Groover et al.
patent: 5585667 (1996-12-01), Asanasavest
patent: 5717252 (1998-02-01), Nakashima et al.

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