Electrolytic capacitor and method for producing the same

    公开(公告)号:US12094662B2

    公开(公告)日:2024-09-17

    申请号:US17298438

    申请日:2019-11-29

    IPC分类号: H01G9/012 H01G9/08 H01G9/15

    CPC分类号: H01G9/012 H01G9/08 H01G9/15

    摘要: An electrolytic capacitor including: a capacitor element including an anode section and a cathode section; an anode lead terminal electrically connected to the anode section; a cathode lead terminal electrically connected to the cathode section; and an outer package covering the capacitor element, wherein the anode section includes an anode body, and an anode wire extending outwardly from an implantation face of the anode body, the outer package has a first face opposing the implantation face, and a second face and a third face sharing one side with the first face and opposing each other, an area of the second face is larger than an area of the third face, an angle θ1 formed between the first and second face is less than 90 degrees, and the first face includes a protruding portion located on an extension of the anode wire, and protruding to an outside of the outer package.

    Electrolytic capacitor and method for manufacturing electrolytic capacitor

    公开(公告)号:US12087515B2

    公开(公告)日:2024-09-10

    申请号:US17955635

    申请日:2022-09-29

    发明人: Yasuo Tanaka

    摘要: An electrolytic capacitor that includes a resin molding that includes a capacitor element including an anode, a dielectric layer, and a cathode, a sealing resin sealing the capacitor element; a first external electrode on a first end surface of the resin molding; and a second external electrode on a second end surface and connected to the cathode exposed at the second end surface of the resin molding, wherein when viewed in a thickness direction perpendicular to the length direction, the anode includes a first anode region having a first outer edge exposed at the first end surface and connected to the first external electrode, and a second anode region having a second outer edge positioned closest to the second external electrode in the length direction, and a length of the first outer edge is greater than a length of the second outer edge in a width direction.

    ELECTROLYTIC CAPACITOR
    5.
    发明公开

    公开(公告)号:US20240194416A1

    公开(公告)日:2024-06-13

    申请号:US18554466

    申请日:2022-04-25

    IPC分类号: H01G9/15 H01G9/025 H01G9/042

    CPC分类号: H01G9/15 H01G9/025 H01G9/042

    摘要: An electrolytic capacitor includes an anode body that includes a porous body and a dielectric layer covering the porous body, and a solid electrolyte layer that covers the dielectric layer. The porous body has a first region located near an outer surface of the porous body, and a second region other than the first region. The first region is a region in which a distance from the outer surface of the porous body is shorter than 0.5D, where D is a shortest distance between the outer surface of the porous body and a center of the porous body. A filling proportion R2 of the solid electrolyte layer in the second region is less than a filling proportion R1 of the solid electrolyte layer in the first region. A ratio R2/R1 of the filling proportion R2 to the filling proportion R1 is less than or equal to 1/10.

    Solid electrolytic capacitor with conductive polymer layer attaining excellent metal ion migration resistance

    公开(公告)号:US11972908B2

    公开(公告)日:2024-04-30

    申请号:US17630368

    申请日:2020-07-30

    IPC分类号: H01G9/025 H01G9/00 H01G9/15

    CPC分类号: H01G9/025 H01G9/0036 H01G9/15

    摘要: The present invention relates to a capacitor comprising i) an electrode body comprising an electrode material, wherein a dielectric layer comprising a dielectric material at least partially covers a surface of the electrode body; ii) a solid electrolyte layer comprising a solid electrolyte material that at least partially covers a surface of the dielectric layer, wherein the solid electrolyte material comprises a conductive polymer; iii) an anode contact that is in contact with the electrode body and that comprises copper, metal-plated copper or a copper-containing alloy; and iv) a cathode contact that is in contact with the solid electrolyte layer; wherein the capacitor further comprises at least one metal ion migration inhibitor. The present invention also relates to a process for the production of a capacitor, to a capacitor obtainable by such a process, to electronic circuit comprising the capacitor according to present invention and to the use of these capacitors in electronic circuits.

    SOLID ELECTROLYTIC CAPACITOR
    10.
    发明公开

    公开(公告)号:US20240087818A1

    公开(公告)日:2024-03-14

    申请号:US18517152

    申请日:2023-11-22

    发明人: Tomohiro NODA

    IPC分类号: H01G9/15 H01G9/012 H01G9/042

    CPC分类号: H01G9/15 H01G9/012 H01G9/0425

    摘要: A solid electrolytic capacitor that includes: a capacitor element; a sealing material that seals the capacitor element to form a sealing body; and a vent structure embedded in the sealing material such that a portion of the vent structure is exposed on an outer surface of the sealing body, the vent structure being composed of a material that has a self-sealing valve action in which the vent structure turns into a melt at a reflow mounting temperature and the melt cleaves when receiving pressure of vaporized components generated inside the sealing body so as to form a hole communicating from an inside to the outer surface of the sealing body to discharge the vaporized components, and upon being cooled from the reflow mounting temperature, the melt flows and then solidifies so as to block the hole.