Power Conversion Device

Abstract: A plurality of semiconductor modules (M) are arranged on the first surface of a substrate (30) so as to be aligned along a first direction orthogonal to the vertical direction of this power conversion device. Each capacitor (40) has a cylindrical portion (44) and electrode terminals (42P, 42N) disposed at a first end portion in the extending direction of the cylindrical portion (44). At least one first capacitor (40_1) is disposed on the second surface side of the substrate (30) such that the extending direction of the cylindrical part (44) is a second direction orthogonal to the vertical direction and the first direction. At least one second capacitor (40_2) is disposed on the second surface side of the substrate (30) such that the extending direction of the cylindrical part (44) is the second direction and the electrode terminals (42P, 42N) are positioned opposite the electrode terminals (42P, 42N) of the at least one first capacitor (40_1) in the second direction. In a plan view seen from the first direction, the at least one first capacitor (40_1) and the at least one second capacitor (40_2) are disposed such that parts of the respective cylindrical portions (44) overlap with each other in the vertical direction and the second direction.

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