Mounting Board and Circuit Device Using the Same

摘要

A mounting board includes: a core layer made of an insulating resin; a first conductive pattern provided on a front side of the core layer; a second conductive pattern provided on a back side of the core layer; and a via provided between a first electrode for a high current in the first conductive pattern and an external electrode including the second conductive pattern, the external electrode provided so as to correspond to the first electrode, the first conductive pattern and the second conductive pattern having the same film thickness, the via set at a resistance value lower than a resistance value of the first conductive pattern so that the high current flows to the external electrode through the via.