Patent ID: 8384154
Filing Date: 2013-02-26
Classification: H01L

Abstract:
1. A bidirectional power transistor formed horizontally in a semiconductor layer disposed on a heavily-doped semiconductor wafer with an interposed insulating layer, the wafer being capable of being biased to a reference voltage, the product of the average dopant concentration and of the thickness of the semiconductor layer ranging between 5·10 11 cm −2 and 5·10 12 cm −2 , said transistor further comprising, in the semiconductor layer, a lightly-doped semiconductor strip of a first conductivity type, at a doping level smaller than 5·10 15 at./cm 3 ; and two doped regions of a second conductivity type at a doping level ranging between 10 15 and 8·10 17 at./cm 3 , located symmetrically with respect to the semiconductor strip.