Complementary vertical SCRs for SOI and triple well processes

Active solid-state devices (e.g. – transistors – solid-state diode – Regenerative type switching device – Device protection

Reexamination Certificate

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C257S197000, C257S355000

Reexamination Certificate

active

07023029

ABSTRACT:
In an ESD protection device using a SCR-like structure, a vertical device is provided that is highly robust and easily allows the triggering voltage to be adjusted during manufacture. Furthermore it is implementable in complementary form based on PNP and NPN BJT structures, to provide both positive and negative pulse protection.

REFERENCES:
patent: 5473169 (1995-12-01), Ker et al.
patent: 5747834 (1998-05-01), Chen et al.
patent: 5751054 (1998-05-01), Yilmaz et al.
patent: 5966599 (1999-10-01), Walker et al.
patent: 6225181 (2001-05-01), Gregory
patent: 6236087 (2001-05-01), Daly et al.
patent: 6396137 (2002-05-01), Klughart
patent: 2002/0135046 (2002-09-01), Yu
patent: 2775831 (1999-09-01), None
Delage et al, IEEEJournal of Solid-State Circuits, vol. 34, No. 9, Sep. 1999, pp. 1283-1289.

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