Patent ID: 8575647

Claim:
A mesa-type bidirectional Shockley diode, comprising: a substrate of a first conductivity type; first and second layers of a second conductivity type on each side of the substrate; regions of the first conductivity type in each of the first and second layers of the second conductivity type; first buried regions of the first conductivity type vertically adjacent to each of said regions of the first conductivity type and located at interfaces between the substrate and the first and second layers of the second conductivity type; first and second grooves arranged in the vicinity of the periphery of the diode on each of its surfaces, the grooves penetrating into the substrate; and an external portion of the diode external to the grooves comprising, adjacent to the first and second layers of the second conductivity type on each side of the substrate, external buried regions of the first conductivity type of a same doping profile as said first buried regions.