Patent ID: 8610131

Claim:
An IGBT comprising: a silicon carbide substrate of a first conductivity type; a silicon carbide semiconductor layer of a second conductivity type provided on a main surface of said silicon carbide substrate; a groove provided in said silicon carbide semiconductor layer; a body region of the first conductivity type provided in said silicon carbide semiconductor layer; and an insulating film covering at least a sidewall surface of said groove, said sidewall surface of said groove being a surface having an off angle of 50° or more and 65° or less with respect to a {0001} plane, said sidewall surface of said groove including a surface of said body region, said insulating film being in contact with at least said surface of said body region at said sidewall surface of said groove, and a first conductivity type impurity concentration in said body region being 5×10 16 cm −3 or more.