Patent ID: 11876033
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device comprising:
a base plate;
a heat dissipation component disposed on a lower surface of the base plate; and
a resin case being rectangular in plan view disposed on an upper surface of the base plate and accommodating a semiconductor element, wherein,
in a state where the resin case is disposed on the heat dissipation component via the base plate, the resin case is attached to the heat dissipation component with a bolt,
the resin case has a recess portion at a corner thereof in which a head of the bolt is placed, an attachment hole extending from a bottom surface of the recess portion and into which a shaft portion of the bolt is inserted, and at least one groove extending from the bottom surface in a direction towards the heat dissipation component and positioned between a side of the recess portion and the attachment hole, and
one end of the at least one groove reaches an outer peripheral end of the resin case, wherein
the contours of the base plate, the resin case, and the heat dissipation component are the same in the plan view.