Patent ID: 11894426
Assignee: FUJI ELECTRIC CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. The semiconductor device according to claim 1 comprising: a transistor portion; and a diode portion, wherein
the diode portion includes:
the first buffer region; and
a cathode region of the first conductivity type provided between the first buffer region and the lower surface of the semiconductor substrate, and
the transistor portion includes:
a second buffer region of the first conductivity type, the second buffer region being provided on the lower surface side of the semiconductor substrate and having one or more doping concentration peaks and one or more hydrogen concentration peaks in the depth direction of the semiconductor substrate; and
a collector region of a second conductivity type provided between the second buffer region and the lower surface of the semiconductor substrate.