Electronic device for ESD protection

摘要

An electronic device includes a thyristor having an anode, a cathode, a first bipolar transistor disposed on the anode side. A second bipolar transistor is disposed on the cathode side. These two bipolar transistors are nested and connected between the anode and the cathode. A MOS transistor is coupled between the collector region and the emitter region of the second bipolar transistor. The transistor has a gate region connected to the cathode via a resistive semiconductor region incorporating at least a part of the base region of the second bipolar transistor.

主权项

1. An electronic device, comprising:
a semiconductor-on-insulator substrate that includes a semiconductor film disposed over an insulating layer, the insulating layer being disposed over a carrier substrate; a thyristor disposed in the semiconductor film, the thyristor having an anode, a cathode, a first bipolar transistor located on an anode side, and a second bipolar transistor located on a cathode side, the first and second bipolar transistors being nested and connected between the anode and the cathode; and a MOS transistor disposed in the semiconductor film, the MOS transistor coupled between a collector region and an emitter region of the second bipolar transistor, the MOS transistor having a gate region connected to the cathode via a resistive semiconductor region that incorporates at least a part of a base region of the second bipolar transistor.