Capacitor with seat plate

A capacitor with a seat plate, the capacitor comprising:

• a capacitor main body;
• and
• the seat plate that holds the capacitor main body, wherein:
• the capacitor main body includes:
• a capacitor element,
• a case having an opening for housing the capacitor element,
• a sealing member that closes the opening of the case, and
• a plurality of lead terminals each penetrating the sealing member and the seat plate,
• the seat plate includes a heat dissipation member, the seat plate having a first surface and a second surface opposite to the first surface,
• the heat dissipation member is exposed at the first surface and the second surface,
• the capacitor element is disposed at a side close to the second surface of the seat plate,
• the case is in contact with a region of the heat dissipation member, the region of the heat dissipation member being exposed at the second surface,
• the plurality of lead terminals include a cathode lead terminal, and
• the cathode lead terminal is in contact with the heat dissipation member.