Patent ID: 6998685

Claim:
An ESD protection device with complementary dual drain implant comprising: a) an N-well implanted in a P-substrate; b) an N+ diffusion implanted on top of said N-well, such that said N+ diffusion extends into said P-substrate on both sides of said N-well; c) where said N+ diffusion is shared by the drains of two adjacent NMOS transistors; d) a pad coupled conductively to said N+ diffusion between said drains; and e) a P-ESD implant interposed, between said N+ diffusion and said N-well such that said N-well is electrically coupled to said N+ diffusion, where said P-ESD implant lowers the avalanche voltage of a transistor by reducing the breakdown voltage of the drain/P-substrate junction, and where the implant dosage for said P-ESD implant is less than the implant dosage for said N+ diffusion but higher than the implant dosage for said N-well.