Patent ID: 8987858
Filing Date: 2015-03-24
Classification: H01L

Abstract:
1. A transient voltage suppression (TVS) device comprising: a first layer of wide band gap semiconductor material formed of a first conductivity type material; a second layer of wide band gap semiconductor material formed of a second conductivity type material over at least a portion of the first layer and comprising an ion implanted material structure between 0.1 micrometers (μm) and 22.0 μm thick, the second layer operating using punch-through physics; and a third layer of wide band gap semiconductor material formed of the first conductivity type material over at least a portion of the second layer, wherein a junction between said second layer and said third layer comprises an edge region that comprises a sidewall extending substantially perpendicular to the second and third layers through the third layer and partially into the second layer, wherein the edge region has a relatively higher resistance than the remainder of the second layer and the third layer.