A semiconductor device is provided, the semiconductor device including a
semiconductor chip having a first metal heat-conductive medium in the
inside thereof, a substrate having a second metal heat-conductive medium
thermally connected to the first metal heat-conductive medium, and a
temperature control device of which at least a part is disposed on the
substrate, thermally connected to the second metal heat-conductive
medium, and configured to control the temperature within the
semiconductor chip.