Surge protector semiconductor subassembly for 3-lead transistor

Details Surge protector semiconductor subassembly for 3-lead transistor Surge protector semiconductor subassembly for 3-lead transistor

1994-04-19

1996-04-30

Crane, Sara W.

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

Housing or package

For plural devices

257666, 257658, 257723, HO1L 29861, HO1L 2334, HO1L 23495

Patent

active

055127843

ABSTRACT:
The subassembly of the present invention includes three pairs of aligned steering diodes and a single thyristor situated between spaced apart conductive heat sink plates. The subassembly is configured to fit into a standard 3-lead transistor outline package by arrangement of the semiconductors and shaping of the conductive plates. In one embodiment, the plates are square, and the components are arranged such that the diode pairs and thyristor are proximate the corners of the plates. In another embodiment, a "T" arrangement is utilized for the components which are situated between "H" shaped plates.

REFERENCES:
patent: 3723836 (1973-03-01), Shekerjian et al.
patent: 4218694 (1980-08-01), Grzybowski
patent: 4408248 (1983-10-01), Bulley et al.
patent: 4599636 (1986-07-01), Roberts et al.
patent: 4796150 (1989-01-01), Dickey et al.
patent: 5150271 (1992-09-01), Unterweger et al.
patent: 5218231 (1993-06-01), Kudo
patent: 5371647 (1994-12-01), Fried et al.
Jedec Publication #95 (see attached TO-220/TO-263).
Teccor Electronics, Inc.--General Catalog #111 pp. 73-77.

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