Patent ID: 11903168
Assignee: DENKA COMPANY LIMITED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A heat dissipation member that is substantially rectangular flat, the heat dissipation member comprising:
a composite portion where silicon carbide having voids is impregnated with metal; and
a metal portion that is different from the composite portion,
a proportion of a volume of the metal portion to a total volume of the heat dissipation member is 2.9% or higher and 12% or lower,
when a length of a diagonal line of the heat dissipation member is represented by L, in a top view where one main surface of the heat dissipation member is a top surface, 40% or higher of a total volume of the metal portion is present in a region D within a distance of L/6 from an apex of any one of four corners of the heat dissipation member, and
a hole that penetrates the metal portion in the region D is provided.