SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a module semiconductor device which is raised its heat cycle life. SOLUTION: A module semiconductor device is constituted by bonding an insulating board 57 of a structure that semiconductor chips 51 are respectively bonded to the surface and rear of an insulative ceramic board 53 via conducting layers 55a and 55b to a base substrate 63 with a solder layer 6, and spacers 3 for making uniform the thickness of the layer 61 are provided between the board 57 and the substrate 63.