Inverter

An inverter comprising:

• a power substrate mounting a plurality of power element groups arranged apart from each other, each of the plurality of power element groups constituted by a plurality of power elements arranged;
• a control substrate disposed apart from the power substrate in a plate thickness direction of the power substrate and mounting an electronic component for controlling the plurality of power elements;
• a capacitor substrate disposed between the power substrate and the control substrate and mounting a plurality of capacitors;
• a heat release member fixed to the power substrate;
• and
• a spacer electrically connecting the power substrate and the capacitor substrate,
• wherein the spacer includes a body portion disposed between two adjacent power element groups of the plurality of power element groups and a heat transfer portion disposed outside the plurality of power element groups in a direction in which the plurality of power elements are arranged and disposed at a position not overlapping with the plurality of capacitors as viewed in a plate thickness direction of the capacitor substrate.