Snapback clamp having low triggering voltage for ESD protection
US7141831B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2004 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Jan 14, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/713
Abstract
An SCR device having a first P type region disposed in a semiconductor body and electrically connected to anode terminal of the device. At least one N type region is also disposed in the body adjacent the first P type region so as to form a PN junction having a width Wn near a surface of the semiconductor body. A further P type region is also disposed in the body to form a further PN junction with the N type region, with the junction having a width Wp near the body surface, with Wp being at least 1.5 times width Wn. A further N type region is provided which is electrically connected to a cathode terminal of the device and forming a third PN junction with the further N type region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.