Power conversion device

A power conversion device comprising:

• a first electrical component having a plurality of first signal terminals;
• a second electrical component having a plurality of second signal terminals;
• a housing accommodating and fixing the first electrical component and the second electrical component;
• a board having a first surface and a second surface opposite to the first surface in a predetermined direction that is orthogonal to the first surface, the board being formed with a plurality of first through holes defining openings on the first surface and the second surface and receiving the plurality of first signal terminals therein and a plurality of second through holes defining openings on the first surface and the second surface and receiving the plurality of second signal terminals therein;
• a guide part having a plurality of guide holes defining a plurality of openings in the predetermined direction, the guide part connected to at least one of the first surface and the second surface of the board so that the plurality of guide holes and the plurality of second through holes are aligned in the predetermined direction;
• a first connection portion connecting the plurality of first signal terminals to the board;
• and
• a second connection portion connecting the plurality of second signal terminals to the board, wherein
• a number of the first through holes disposed part unit area is greater than a number of the second through holes disposed per unit area,
• the plurality of first through holes are located in a central area in a planar direction of the board, the planar direction being orthogonal to the predetermined direction,
• the plurality of second through holes are located in an area adjacent to an end of the board in the planar direction, and
• the end of the board is connected to the housing.