Patent ID: 6459133
Filing Date: 2002-10-01
Classification: H01L

Abstract:
A semiconductor device comprising a semiconductor body (10) which includes a substrate (11) and is provided with a mesa (12), said semiconductor body comprising, in succession, a first semiconductor region (1) of a first conductivity type, a second semiconductor region (2) of a second conductivity type, opposite to the first conductivity type, and a third semiconductor region (3) of the first conductivity type, the first and the third semiconductor regions (1, 3) being provided with an electrical connection conductor (5, 6) across which, during operation of the device, an electric voltage is applied, and the thickness and the doping concentration of the second semiconductor region (2) being chosen such that, during operation, the second semiconductor region (2) is fully depleted, characterized in that a part (2A, 2B) of the second semiconductor region (2), which, viewed in projection, adjoins the edge of the mesa (12) but does not extend laterally beyond the edge of the mesa (12) or vertically below the mesa, is provided with a flux of doping atoms of the second conductivity type which is greater than that in the rest (2A) of the second semiconductor region (2).