Patent ID: 9054151
Filing Date: 2015-06-09
Classification: H01L

Abstract:
1. A semiconductor device, comprising a semiconductor body comprising: a first surface having a normal direction defining a vertical direction; a first n-type semiconductor region arranged below the first surface and having a first maximum doping concentration; wherein the first n-type semiconductor region is devoid of p-type doping; a second n-type semiconductor region arranged completely within the first n-type semiconductor region and comprising, in a vertical cross-section, two spaced apart first n-type portions each adjoining the first n-type semiconductor region, having a maximum doping concentration which is higher than the first maximum doping concentration and having a first minimum distance to the first surface, and a second n-type portion adjoining the two spaced apart first n-type portions and having a maximum doping concentration which is higher than the first maximum doping concentration and a second minimum distance to the first surface which is larger than the first minimum distance; and a p-type second semiconductor layer which forms a pn-junction with the second n-type portion.