Semiconductor module and semiconductor device

摘要

A semiconductor module includes at least one intermediate plate which has heat conductivity, power semiconductor elements which are provided for respective main surfaces of the intermediate plate, heat sinks which are arranged so that the power semiconductor elements are held between the heat sinks and the intermediate plate, and a mold part which seals the intermediate plate, the power semiconductor elements, and the heat sinks with mold resin. Surfaces of the heat sinks opposite to the side of the power semiconductor elements are exposed from the mold part. The intermediate plate has an intermediate radiator which projects in the direction parallel to the main surface from the mold part.

主权项

1. A semiconductor module, comprising;
at least one intermediate plate which has heat conductivity; power semiconductor elements which are provided for respective main surfaces of the intermediate plate; heat sinks which are arranged so that the power semiconductor elements are held between the heat sinks and the intermediate plate; and a mold part which seals the intermediate plate, the power semiconductor elements, and the heat sinks with mold resin, wherein surfaces of the heat sinks opposite to a side of the power semiconductor elements are exposed from the mold part, the intermediate plate has an intermediate radiator which projects in a direction parallel to the main surfaces from the mold part; the intermediate plate has anisotropy in thermal conductivity, and thermal conductivity in the projection direction of the intermediate radiator is higher than thermal conductivity in the width direction orthogonal to both the projection direction and the thickness direction of the intermediate radiator.