Compact ESD structure

Abstract

A compact electrostatic discharge (ESD) structure comprises a substrate; a sub-collector region over the substrate; a collector region over a first portion of the substrate; and a base region over the collector region; an emitter region over the base region, wherein the emitter region, the base region, and the collector region form a bipolar transistor. A cathode region is provided over a second portion of the substrate. An anode contact is provided over the cathode region, wherein the cathode region and the anode contact form a Schottky diode. An emitter / anode bridge electrically couples the emitter region to the anode contact, wherein the collector region and the cathode region are electrically coupled via the sub-collector region such that the bipolar transistor and the Schottky diode are connected in an anti-parallel.

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