Patent ID: 11929307
Assignee: HITACHI ASTEMO, LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device comprising:
a semiconductor element; and
a first lead frame that is disposed to face the semiconductor element and is connected to the semiconductor element by a first solder material,
wherein
the first lead frame includes a top surface including a surface facing the semiconductor element, and a side surface connected to a peripheral edge portion of the top surface at a predetermined angle with respect to the top surface,
the top surface of the first lead frame includes a solder surface that is in contact with the first solder material and a solder resistance surface on which the first solder material is less wettable than on the solder surface, and
the solder resistance surface is formed to surround periphery of the solder surface;
wherein:
the side surface of the first lead frame is connected to a peripheral edge portion of the top surface with a curved surface formed with a radius interposed therebetween, and
the solder resistance surface is formed to include the curved surface.