Abstract: A power module includes a plurality of conductive wire groups and a sealing member. The plurality of conductive wire groups each include a first bonded portion and a second bonded portion. A maximum gap between intermediate portions of a pair of conductive wire groups adjacent to each other is larger than a first gap between the first bonded portions of the pair of conductive wire groups adjacent to each other. The maximum gap between the intermediate portions of the pair of conductive wire groups adjacent to each other is larger than a second gap between the second bonded portions of the pair of conductive wire groups adjacent to each other. Therefore, the power module is improved in reliability.

Abstract: A power module includes a plurality of conductive wire groups and a sealing member. The plurality of conductive wire groups each include a first bonded portion and a second bonded portion. A maximum gap between intermediate portions of a pair of conductive wire groups adjacent to each other is larger than a first gap between the first bonded portions of the pair of conductive wire groups adjacent to each other. The maximum gap between the intermediate portions of the pair of conductive wire groups adjacent to each other is larger than a second gap between the second bonded portions of the pair of conductive wire groups adjacent to each other. Therefore, the power module is improved in reliability.

Abstract: A semiconductor element, a substrate on which the semiconductor element is mounted, a connecting portion formed constituted by an arrangement of a plurality of wirings, a casing in which the substrate is disposed on a side of a bottom surface thereof and the semiconductor element and the connecting portion are accommodated therein, and an insulating sealing material filled in the casing, are provided. The plurality of wirings constituting the connecting portion are aligned in a loop shape in a same direction, and each height thereof is arranged such that each of the wiring has a height which is gradually increased one after another toward one direction in the arrangement.