METAL CORE MULTILAYER PRINTED WIRING BOARD

摘要

A metal core multilayer printed wiring board (1) composed of a laminate of an alternation of an insulating layer and a conductive layer. At least one inner layer of the laminate is a metal sheet and used as a core. The printed wiring board (1) is characterized in that a metal sheet (13) is provided under a portion where a heat-generating device (10) is mounted, the surface layer on which the heat-generating device (10) is mounted is connected to the metal sheet (13) of the inner layer through a BVH (12), and a heat dissipating layer (14) is formed in the surface layer. Without reducing the circuit mounting density, the heat generated by the heat-generating device can be efficiently dissipated outside the wiring board, and a device can be mounted on the opposite side to the side where the heat-generating device is mounted.