Abstract: An electronic component includes a main body and signal terminals projecting in a projection direction of a module control terminal, the signal terminals being arranged in an arrangement direction. Through-holes are formed in a control board, and the signal terminals are inserted into the through-holes. In a case, an opening that opens in the projection direction is formed, and ends of the signal terminals are positioned in the projection direction. At a position adjacent to a through-hole group including the through-holes in the arrangement direction, a communication space is formed which makes a first space, which is positioned at a side of electronic component in the projection direction, communicate with a second space opposite to the first space. When a length of the through-hole group is a, and a distance between the through-hole group and the communication space is b, a length of the communication space is longer than a+b.

Abstract: An electronic component includes a main body and signal terminals projecting in a projection direction of a module control terminal, the signal terminals being arranged in an arrangement direction. Through-holes are formed in a control board, and the signal terminals are inserted into the through-holes. In a case, an opening that opens in the projection direction is formed, and ends of the signal terminals are positioned in the projection direction. At a position adjacent to a through-hole group including the through-holes in the arrangement direction, a communication space is formed which makes a first space, which is positioned at a side of electronic component in the projection direction, communicate with a second space opposite to the first space. When a length of the through-hole group is a, and a distance between the through-hole group and the communication space is b, a length of the communication space is longer than a+b.

Abstract: An electric power converter includes a laminated body, a capacitor, a case, and a pressing member. The laminated body is formed by laminating semiconductor modules and cooling pipes. The pressing member presses the laminated body in a laminating direction of the laminated body. The case has outer wall portions that form an outer shell, and partition wall portions formed in the case and are connected to the outer wall portions. The capacitor has capacitor elements and a sealing member. The sealing member is filled in a capacitor housing space in a state where the capacitor elements are sealed. Pressing force of the pressing member is applied to an interposing partition wall portion interposing between the laminated body and the capacitor among the partition wall portions. A thickness of the interposing partition wall portion is made thinner than any other parts of the outer wall portions.

Abstract: An electric power converter includes a laminated body, a capacitor, a case, and a pressing member. The laminated body is formed by laminating semiconductor modules and cooling pipes. The pressing member presses the laminated body in a laminating direction of the laminated body. The case has outer wall portions that form an outer shell, and partition wall portions formed in the case and are connected to the outer wall portions. The capacitor has capacitor elements and a sealing member. The sealing member is filled in a capacitor housing space in a state where the capacitor elements are sealed. Pressing force of the pressing member is applied to an interposing partition wall portion interposing between the laminated body and the capacitor among the partition wall portions. A thickness of the interposing partition wall portion is made thinner than any other parts of the outer wall portions.