Film capacitor

A film capacitor comprising:

• a capacitor element including one or more wound or laminated metallized films, each metallized film including a dielectric resin film and a metal layer on one surface of the dielectric resin film, wherein the dielectric resin film contains a curable resin as a main component thereof;
• a thermoplastic resin cover covering an outer surface of the capacitor element in a direction in which layers of the dielectric resin film are laminated with the metal layer therebetween;
• and
• an exterior body covering an outer periphery of the capacitor element and an outer surface of the cover, wherein
• the thermoplastic resin cover is a wound film that is wound around the outer surface of the capacitor element,
• the wound film has irregularities on opposed surfaces thereof, and
• protrusions of the irregularities each have a height of 0.01 mm to 0.1 mm.

A film capacitor comprising:

• a capacitor element including one or more wound or laminated metallized films, each metallized film including a dielectric resin film and a metal layer on one surface of the dielectric resin film;
• a cover covering an outer surface of the capacitor element in a direction in which layers of the dielectric resin film are laminated with the metal layer therebetween;
• and
• an exterior body covering an outer periphery of the capacitor element and an outer surface of the cover,
• wherein the cover has an elastic modulus, and the elastic modulus of the cover at 25° C. is 30% to 150% of an elastic modulus of the dielectric resin film at 25° C., and
• the elastic modulus of the cover at 125° C. is 1% to 30% of the elastic modulus of the dielectric resin film at 125° C.

A film capacitor comprising:

• a capacitor element including one or more wound or laminated metallized films, each metallized film including a dielectric resin film and a metal layer on one surface of the dielectric resin film;
• a cover comprising a wound film wound around an outer surface of the capacitor element in a direction in which layers of the dielectric resin film are laminated with the metal layer therebetween, and the wound film has at least one surface that is a roughened surface or has irregularities on opposed surfaces thereof;
• and
• an exterior body covering an outer periphery of the capacitor element and an outer surface of the cover,
• wherein the wound film has only on one roughened surface, and the only one roughened surface is closer to the exterior body than the capacitor element.

A film capacitor comprising:

• a capacitor element including one or more wound or laminated metallized films, each metallized film including a dielectric resin film and a metal layer on one surface of the dielectric resin film;
• a cover comprising a wound film wound around an outer surface of the capacitor element in a direction in which layers of the dielectric resin film are laminated with the metal layer therebetween, and the wound film has at least one surface that is a roughened surface or has irregularities on opposed surfaces thereof;
• and
• an exterior body covering an outer periphery of the capacitor element and an outer surface of the cover,
• wherein protrusions of the irregularities each have a height of 0.01 mm to 0.1 mm.