Capacitor and method for producing same, and capacitor-mounting method

A capacitor, comprising:

• a capacitor element housed in a bottomed cylindrical outer case, an open end of the cylindrical outer case being sealed with a sealing member;
• a capacitor body providing a lead terminal derived from the capacitor element through the sealing member, the lead terminal being housed in an axially movable pedestal having a bottom surface portion and a side wall formed to surround the outer periphery of the capacitor body having a through hole;
• and
• a convex portion protruding toward the capacitor body from the inner surface of the side wall,
• wherein the convex portion is disposed on at least one of an upper caulking portion and a lower caulking portion formed by caulking the side surface of the outer case, a gap portion being provided between (i) at least one of:
• the upper caulking portion and the lower caulking portion, and (ii) the convex portion, and
• wherein the gap portion is provided on the at least one of the upper caulking portion and the lower caulking portion of the convex portion in the axial direction of the capacitor body, the capacitor body being housed in the axially movable pedestal of the capacitor through the gap portion.