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

Claim 6:
7. 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 curved surface 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 surface;
the solder resistance surface is formed to surround periphery of the solder wherein an oxide film is formed on the solder resistance surface.