Patent ID: 8653535

Claim:
A semiconductor device, comprising: a semiconductor substrate of a first conductivity type which has a main surface and a rear surface and contains silicon carbide; a first epitaxial layer of the first conductivity type which is provided on the main surface of the semiconductor substrate and contains silicon carbide; a body region of a second conductivity type which is provided in the first epitaxial layer; an impurity region of the first conductivity type which is provided in contact with the body region; a contact region of the second conductivity type which is provided in the body region; a first ohmic electrode in contact with the contact region; a gate insulating film provided above at least a part of the body region; and a gate electrode provided on the gate insulating film; wherein: the contact region includes a first region in contact with the first ohmic electrode and a second region located at a position deeper than that of the first region and in contact with the body region; the first region and the second region each have at least one peak of impurity concentration in a depth direction; the at least one peak of impurity concentration in the first region has a higher value than that of the at least one peak of impurity concentration in the second region; a bottom surface of the second region is deeper than a bottom surface of the impurity region and is shallower than a bottom surface of the body region; and the first ohmic electrode is formed of an alloy of a metal and silicon carbide.