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1. (WO2017173444) BIPOLAR SCR

Pub. No.:    WO/2017/173444    International Application No.:    PCT/US2017/025738
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Tue Apr 04 01:59:59 CEST 2017
IPC: H01L 29/06
Applicants: TEXAS INSTRUMENTS INCORPORATED
TEXAS INSTRUMENTS JAPAN LIMITED
Inventors: APPASWAMY, Aravind, C.
PHILLIPS, Stanley
Title: BIPOLAR SCR
Abstract:
In described examples, a high-voltage bipolar semiconductor controlled rectifier SCR (100) includes: an emitter region (102) having a first polarity and overlying a base region (104) having a second polarity different from the first polarity; a collector region (106, 108) having the first polarity and lying under the base region (104); an anode region (114, 116, 120) having the second polarity; a first sinker region (118) having the first polarity and contacting the collector region (106, 108), wherein the anode region (114, 116, 120) is between the first sinker region (118) and the base region (104); and a second sinker region (112) having the first polarity and contacting the collector region (106, 108, 110), the second sinker region (112) lying between the anode region (114, 116, 120) and the base region (104), wherein an extension (120) of the anode region (114, 116, 120) extends under a portion of the second sinker region (112).