US 7,095,605 B2 · Solid electrolytic capacitor

Abstract

A solid electrolytic capacitor includes a capacitor element and an outer shell, made of an insulating resin, that covers the capacitor element. The capacitor element has a winding portion that is formed by rolling an anode foil with a dielectric oxidized film formed on its surface, a cathode foil, and a separator that is sandwiched between the anode foil and the cathode foil, and a conductive polymer layer is formed between the anode foil and the cathode foil. An anode lead wire electrically connected to the anode foil, and a cathode lead wire electrically connected to the cathode foil extend from the winding portion, penetrate the outer shell, and are respectively connected to an anode electrode terminal and a cathode electrode terminal that are arranged on a surface of the outer shell.

Claims11

Dependent claims

A solid electrolytic capacitor comprising:

a capacitor element;
and
an outer shell that is made of an insulating resin by molding such that the outer shell covers the capacitor element,
wherein the capacitor element comprises a winding portion that is formed by rolling together an anode foil with a dielectric oxidized film formed on its surface, a cathode foil, and a separator that is sandwiched between the anode foil and the cathode foil;
wherein a conductive polymer layer is formed between the anode foil and the cathode foil;
and
wherein an anode lead wire electrically connected to the anode foil, and a cathode lead wire electrically connected to a cathode foil extend from the winding portion, penetrate the outer shell, and are respectively connected to an anode terminal and a cathode terminal that are placed in indentations that are formed on a surface of the outer shell.

4 more elements

Dependencies are inferred from the claim text.

Solid electrolytic capacitor

Life of this patent

Solid electrolytic capacitor

Life of this patent

Abstract

Claims11