Murata Manufacturing Co., Ltd.

Shizuki Electric Company, Inc.

Takuya Sakamoto

Satoru Jogan

Senichi Ozasa

Tomomichi Ichikawa

Ryo Majima

A film capacitor that includes first and second dielectric films, first and second inner electrodes, and first and second outer electrodes. The first inner electrode includes a first connection portion, a first main electrode portion joined to the first connection portion and thinner than the first connection portion, and a first thin portion extending from the first main electrode portion and thinner than the first main electrode portion. The second inner electrode includes a second connection portion and a second main electrode portion joined to the second connection portion and thinner than the second connection portion. The first main electrode portion opposes the second main electrode portion across the first dielectric film. The second connection portion includes a reduction region having a thickness that decreases from the second connection portion toward the second main electrode portion. The first thin portion opposes the reduction region across the first dielectric film.

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.

Growing community of inventors

Nishinomiya, Japan

Takuya Sakamoto