Patent ID: 8373247

Claim:
A semiconductor device, comprising: a first semiconductor region of a first conductivity type; a second semiconductor region of the first conductivity type formed on a first major surface of the first semiconductor region; a first main electrode formed on a face side opposite to the first major surface of the first semiconductor region; a third semiconductor region of a second conductivity type formed on a part of a second major surface of the second semiconductor region on a side opposite to the first semiconductor region; a second main electrode formed to bond to the third semiconductor region; and a plurality of embedded semiconductor regions of the second conductivity type provided in a termination region, the termination region being an outside of a device region, a main electric current path being formed between the first main electrode and the second main electrode in the device region of the second semiconductor region, a distance between the embedded semiconductor region and the second major surface along a direction from the second major surface toward the first major surface becoming longer toward outside from the device region.