Fast trigger ESD device for protection of integrated circuits

Details Fast trigger ESD device for protection of integrated circuits Fast trigger ESD device for protection of integrated circuits

2004-11-18

2008-08-05

Sherry, Michael J (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

Reexamination Certificate

active

07408754

ABSTRACT:
The present invention provides an ESD device for protecting thin oxide layers in transistors or capacitors in an integrated circuit. In one embodiment, the ESD device includes a silicon-controlled rectifier (SCR), the SCR including a PNP bipolar transistor and a NPN bipolar transistor. The ESD device further includes first and second trigger devices coupled to the SCR and configured to simultaneously turn on the PNP bipolar transistor and the NPN bipolar transistor in response to an ESD pulse on the ESD device. The base of the NPN bipolar transistor is floating to allow a first external resistor to be connected between the base and emitter of the NPN bipolar transistor. A second external resistor can be connected between the base and emitter of the PNP bipolar transistor.

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