RADIATOR AND ITS PRODUCING PROCESS, SUBSTRATE FOR POWER MODULE, POWER MODULE

摘要

PROBLEM TO BE SOLVED: To reduce the weight while enhancing machinability, and to attain a sufficient strength while preventing warp. SOLUTION: The radiator 16 is formed by integrating powder of a low thermal expansion material 17 having characteristics of small thermal expansion coefficient, and powder of a metal high heat conducting material 18. The low thermal expansion material 17 is an iron-nickel based alloy, e.g. Invar alloy. The high heat conducting material 18 is composed of a material having a high thermal conductivity, e.g. Cu or its alloy. COPYRIGHT: (C)2004,JPO&NCIPI