Substrate for mounting device and package for housing device employing the same

摘要

There are provided a substrate for mounting a device and a package for housing the device employing the same in which a power semiconductor device can be readily set for a temperature suitable for operation and can thus function in a proper fashion.;The substrate for mounting the device includes a support body having, on one main surface of the support body, a device mounting portion for mounting a power semiconductor device, the support body having a plurality of columnar parts that are spaced apart in a thickness direction with respect to the device mounting portion and are arranged apart from each other; and a heat accumulating region which is disposed between the columnar parts and is lower in thermal conductivity than the support body.

主权项

1. A package for housing a device comprising:
a substrate for mounting a device comprising: a support body having, on one main surface of the support body, a device mounting portion for mounting a power semiconductor device, the support body having a plurality of columnar parts that are spaced apart in a thickness direction with respect to the mounting portion and are arranged apart from each other; and a heat accumulating region which is disposed between the columnar parts and is lower in thermal conductivity than the support body; a frame body which accommodates therein the substrate and is so placed as to surround the power semiconductor device; a base which is provided within the frame body and on which an electronic component is to be mounted; and a lid body bonded to an upper surface of the frame body, each of the columnar parts including a bottom face bonded to the base and a side face which is entirely exposed to the heat accumulating region.