Murata Manufacturing Co., Ltd.

Shizuki Electric Company, Inc.

Satoru Jogan

Kimiaki Kikuchi

Shinichi Kobayashi

Tomomichi Ichikawa

Senichi Ozasa

Takuya Sakamoto

Satoshi Kamei

Ryo Majima

Tomoki Inakura

Kyosuke Yoshida

Hiroki Kitamura

A film capacitor that includes: a laminate including a first dielectric film, a second dielectric film, a first metal layer, and a second metal layer laminated in a laminate direction; a first external electrode on a first end surface of the laminate in a width direction perpendicular to the laminate direction and connected to the first metal layer; and a second external electrode on a second end surface of the laminate in the width direction, the first external electrode having first protrusions arranged in the laminate direction and protruding toward the second external electrode in the width direction, at least one of the first protrusions of the first external electrode having a first protrusion end with a width greater than a total thickness of the first dielectric film and the second dielectric film by two times or more.

Film capacitor

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.

A film capacitorthat includes: a capacitor element including a metallized film with a resin film and a metal layer on a surface of the resin film; an outer case that houses the capacitor element; and a filling resin that fills a space between the capacitor element and the outer case, wherein the outer case includes a resin composition that contains a liquid crystal polymer and an inorganic filler, and an amount of exposure of the inorganic filler from an outer surface of the outer case is 5% to 90%.

Film capacitor and exterior case for film capacitor

A film capacitor that includes: an outer case defining an opening; a capacitor element within the outer case, the capacitor element including one or more metallized films, each metallized film including a resin film and a metal layer on a surface of the resin film; and a filling resin that fills a space between the capacitor element and the outer case, wherein the filling resin includes a first filling resin layer surrounding the capacitor element and a second filling resin layer disposed closer to the opening of the outer case than the first filling resin layer, the first filling resin layer and the second filling resin layer are made of the same resin and each contain a filler, and a filler content of the second filling resin layer is higher than a filler content of a portion of the first filling resin layer opposing the second filling resin layer.

A film capacitor that includes a capacitor element including one or more wound or laminated metallized films, each metallized film including a resin film and a metal layer on a surface of the resin film; an outer case that houses the capacitor element; and a filling resin that fills a space between the capacitor element and the outer case, wherein the outer case is made of a resin composition containing a liquid crystal polymer and an inorganic filler.

Film capacitor, and outer case for film capacitor

A film capacitor including a first dielectric film, a second dielectric film, a first internal electrode, a second internal electrode, a first external electrode, and a second external electrode. The first internal electrode includes a first connection portion, a first main electrode portion contiguous with the first connection portion and thinner than the first connection portion, and a first thin film portion extending from the first main electrode portion and thinner than the first main electrode portion. The second internal electrode includes a second connection portion and a second main electrode portion contiguous with the second connection portion and thinner than the second connection portion. The first main electrode portion opposes the second main electrode portion with the first dielectric film interposed therebetween and does not oppose the second connection portion, and the first thin film portion opposes the second connection portion with the first dielectric film interposed therebetween.

A film capacitor that includes a capacitor element having a metallized film including a resin film and a metal layer on a surface of the resin film; an outer case that houses the capacitor element; and a filling resin that fills a space between the capacitor element and the outer case, wherein a surface free energy of an inner surface of the outer case in contact with the filling resin is 44 mN/m or less.

Film capacitor, and exterior case for film capacitor

A film capacitor that includes a laminate having a first resin film including a first metal layer on a surface thereof alternately laminated with a second resin film including a second metal layer on a surface thereof, the laminate having opposed first and second ends, a first external electrode on the first end of the laminate, and a second external electrode on the second end of the laminate, wherein the first resin film protrudes more than the second resin film by a first protruding length of 0.5 mm to 3 mm on the first end of the laminate, and the first resin film has a Young's modulus at 150&#xb0; C. of 0.6 GPa or more in a direction perpendicular to a lamination direction of the laminate and parallel to a direction from the first end to the second end of the laminate.

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Nagaokakyo, Japan

Satoru Jogan