A film capacitor includes a stacked body formed by stacking metalized films in each of which a metal electrode is formed on a surface of a dielectric film, at least one of the dielectric films containing a high thermal conductive filler; and external electrodes formed at electrode forming ends provided at opposed positions in the stacked body. The stacked body includes a high thermal conductive portion in which a content of the high thermal conductive filler in the at least one dielectric film is relatively high, and a low thermal conductive portion in which the content of the high thermal conductive filler in the at least one dielectric film is relatively low, or the high thermal conductive filler is not contained. The high thermal conductive portion is provided to continuously extend from an inside of the stacked body to a side portion other than the electrode forming ends.

A composite electronic component includes a multilayer capacitor; a tantalum capacitor; a lead frame disposed between the multilayer capacitor and the tantalum capacitor and electrically connecting the multilayer capacitor and the tantalum capacitor to each other; and an encapsulation member encapsulating the multilayer capacitor and the tantalum capacitor so that a portion of the lead frame is exposed.

A composite electronic component includes a multilayer capacitor; a tantalum capacitor; a lead frame disposed between the multilayer capacitor and the tantalum capacitor and electrically connecting the multilayer capacitor and the tantalum capacitor to each other; and an encapsulation member encapsulating the multilayer capacitor and the tantalum capacitor so that a portion of the lead frame is exposed.

The present invention relates to an electrode unit (10, 20) for an electric vacuum capacitor comprising a band-shaped capacitor plate (11, 21) with a height H, wherein the band-shaped capacitor plate (11, 21) is wound in a spiral with a maximum diameter D.sub.max and a constant distance between successive turns, wherein the band-shaped capacitor plate (11, 21) comprises a first longitudinal edge (11a, 21a) attached to a supporting part (12) and a second longitudinal edge (11b, 21b), the second longitudinal edge (11b, 21b) being free, wherein at the outer extremity of the spiral, the first longitudinal edge (11a, 21a) and the second longitudinal edge (11b, 21b) are connected by an inclined edge (11c, 21c) such that the first longitudinal edge (11a, 21a) is longer than the second longitudinal edge (11b, 21b), wherein the inclined edge (11c, 21c) forms with the longitudinal axis (B) of the band-shaped capacitor plate (11, 21) an angle α less than or equal to an angle α.sub.max=(45°.Math.π/180°). The invention relates also to a vacuum capacitor (30) comprising at least one electrode unit (10, 20) according to the present invention.

A film capacitor preferably includes a single film capacitor layer wound around itself in adjacent layers to form a winding. The film capacitor layer preferably includes a dielectric film, a first metallization layer formed on the dielectric film, a dielectric coating formed on the first metallization layer, and a second metallization layer formed on the dielectric coating. A metallic contact layer is preferably formed on an outer edge of the winding. A terminal is preferably formed on an outer edge of the metallic contact layer. An insulating material preferably encapsulates the winding, the metallic contact layer, and a portion of the terminal. The capacitor as self-healing properties. Further, the border of the electrodes may be wave-cut. Further, an insulating gap may be added between the border and the upper electrode.

A film capacitor preferably includes a single film capacitor layer wound around itself in adjacent layers to form a winding. The film capacitor layer preferably includes a dielectric film, a first metallization layer formed on the dielectric film, a dielectric coating formed on the first metallization layer, and a second metallization layer formed on the dielectric coating. A metallic contact layer is preferably formed on an outer edge of the winding. A terminal is preferably formed on an outer edge of the metallic contact layer. An insulating material preferably encapsulates the winding, the metallic contact layer, and a portion of the terminal. The capacitor as self-healing properties. Further, the border of the electrodes may be wave-cut. Further, an insulating gap may be added between the border and the upper electrode.

A vacuum-capacitor-type instrument voltage transformer (1) is equipped with a main capacitor (2) and an insulating tube (3) that accommodates the main capacitor (2). A voltage dividing capacitor (4) is connected to the main capacitor (2) in series. The main capacitor (2) is equipped with a plurality of vacuum capacitors (2a) to (2c) that are connected in series. A high-voltage-side electrode (6) is provided on a high-voltage side of the insulating tube (3), and a ground-side electrode (7) is provided on its low-voltage side. The high-voltage-side electrode (6) is equipped with a high-voltage shield (8). Electrostatic capacity of the vacuum capacitor (for example, the vacuum capacitor (2a)) disposed on the high-voltage side is set to be greater than electrostatic capacity of the vacuum capacitor (for example, the vacuum capacitor (2b)) disposed on the low-voltage side.

A film capacitor including a laminate including: a first dielectric film, a second dielectric film, a first metal layer, and a second metal layer, and defining a first end surface and a second end surface opposing each other in a width direction. The first and second dielectric films face each other in a thickness direction. The first and second end surfaces each define an unevenness having a height of 0.07 mm to 0.25 mm and a pitch of 0.07 mm to 0.15 mm continuously along the thickness direction. First gaps having a length of 0.3 mm or greater are between the second dielectric film and a first external electrode on the first end surface, and second gaps having a length of 0.3 mm or greater are between the first or second dielectric film without the second metal layer and a second external electrode on the second end surface.

A film capacitor including a laminate including: a first dielectric film, a second dielectric film, a first metal layer, and a second metal layer, and defining a first end surface and a second end surface opposing each other in a width direction. The first and second dielectric films face each other in a thickness direction. The first and second end surfaces each define an unevenness having a height of 0.07 mm to 0.25 mm and a pitch of 0.07 mm to 0.15 mm continuously along the thickness direction. First gaps having a length of 0.3 mm or greater are between the second dielectric film and a first external electrode on the first end surface, and second gaps having a length of 0.3 mm or greater are between the first or second dielectric film without the second metal layer and a second external electrode on the second end surface.

A film capacitor that includes 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. In a first aspect, the dielectric resin film contains a curable resin as a main component thereof, and the cover is made of a thermoplastic resin.