Patent ID: 8890278

Claim:
A semiconductor device comprising a Schottky barrier diode, the Schottky barrier diode comprising: a semiconductor substrate having a first conduction type and containing silicon carbide; a first semiconductor region formed on the semiconductor substrate and having the first conduction type; an active region having an area of 0.1 cm 2 or more in the main surface of the first semiconductor region; a plurality of second semiconductor regions formed on the upper surface of the first semiconductor region in the active region and having a second conduction type opposite to the first conduction type; a first electrode connected by Schottky connection to the first semiconductor region in the active region; and a second electrode electrically connected to a back surface of the semiconductor substrate, wherein a multiplication of a density of defects D EP which the first semiconductor region has and an area of the first semiconductor region A S exposed from the second semiconductor regions in the active region satisfies D EP ×A S ≦223.