A body includes dielectric films, first electrode films, and second electrode films being stacked on one another or being wound together. A first external electrode is at one end of the body and electrically connected to the first electrode films. A second external electrode is at another end of the body and electrically connected to the second electrode films. The body includes a capacitance portion in which each of the first electrode films faces a corresponding second electrode film of the second electrode films with a corresponding dielectric film of the dielectric films in between, and the capacitance portion includes spaces each between a corresponding dielectric film of the dielectric films and a corresponding first electrode film of the first electrode films or between a corresponding dielectric film of the dielectric films and a corresponding second electrode film of the second electrode films.

A body includes dielectric films, first electrode films, and second electrode films being stacked on one another or being wound together. A first external electrode is at one end of the body and electrically connected to the first electrode films. A second external electrode is at another end of the body and electrically connected to the second electrode films. The body includes a capacitance portion in which each of the first electrode films faces a corresponding second electrode film of the second electrode films with a corresponding dielectric film of the dielectric films in between, and the capacitance portion includes spaces each between a corresponding dielectric film of the dielectric films and a corresponding first electrode film of the first electrode films or between a corresponding dielectric film of the dielectric films and a corresponding second electrode film of the second electrode films.

A dielectric film includes a substrate being a film including a resin material, and a plurality of microscopic members on a first surface of the substrate. Each of the plurality of microscopic members includes a first portion spaced from the first surface, and a second portion extending from the first surface and supporting the first portion.

A film capacitor includes first and second contact layers and a metallized dielectric film with first and second end faces and with first and second film sides. The first end face of the metallized dielectric film is connected to the first contact layer and the second end face is connected to the second contact layer. The metallized dielectric film has first, second and third metallization layers, with at least two of the metallization layers applied on the first film side of the metallized dielectric film and at least a further of the metallization layers applied on the second film side. The metallization layers are arranged on the film sides in such a manner that a first overlap with a first partial capacitance and a second overlap with a second partial capacitance are embodied between the metallization layers on the film sides, with the partial capacitances forming a series connection.

In an embodiment a capacitor includes a dielectric layer including a polyamideimide, the dielectric layer being uniform and a first electrode disposed directly adjacent to the dielectric layer.

In an embodiment a capacitor includes a dielectric layer including a polyamideimide, the dielectric layer being uniform and a first electrode disposed directly adjacent to the dielectric layer.

A dielectric composition includes a polymer having a repeating structure of a unit structure including at least one heterocycle and at least one carbonyl group. The unit structure preferably includes at least one chemical structure including the at least one heterocycle and the at least one carbonyl group bonded to the at least one heterocycle.

A dielectric composition includes a polymer having a repeating structure of a unit structure including at least one heterocycle and at least one carbonyl group. The unit structure preferably includes at least one chemical structure including the at least one heterocycle and the at least one carbonyl group bonded to the at least one heterocycle.

A film capacitor device includes a capacitor body, a metal electrode on each of side surfaces of the capacitor body, an external electrode electrically connected to the metal electrode, and a bond bonding the metal electrode and the external electrode together. The capacitor body includes a plurality of unit stacks being stacked. The plurality of unit stacks each include a film stack including a plurality of dielectric films being stacked and a pair of protective films covering surfaces of the film stack. The plurality of unit stacks in the capacitor body are stacked with end faces of the plurality of unit stacks in a first direction (x-direction) being displaced.

A film capacitor device includes a capacitor body, a metal electrode on each of side surfaces of the capacitor body, an external electrode electrically connected to the metal electrode, and a bond bonding the metal electrode and the external electrode together. The capacitor body includes a plurality of unit stacks being stacked. The plurality of unit stacks each include a film stack including a plurality of dielectric films being stacked and a pair of protective films covering surfaces of the film stack. The plurality of unit stacks in the capacitor body are stacked with end faces of the plurality of unit stacks in a first direction (x-direction) being displaced.