Patent ID: 11011317

Abstract:
A solid electrolytic capacitor includes a valve-acting metal substrate including a core part and a porous part disposed on at least one principal surface of the core part. A dielectric layer is formed in a surface of the porous part and a solid electrolyte layer is disposed on the dielectric layer. A conductive layer is disposed on the solid electrolyte layer and a sealing resin seals a principal surface of the capacitor element. A cathodic outer electrode is electrically connected to the conductive layer and an anodic outer electrode is electrically connected to the core part. An insulating layer is interposed between the core part and the sealing resin. The insulating layer, the sealing resin, and the anodic outer electrode are disposed on and above the core part in this order. A first anodic via electrode is formed in the sealing resin disposed on the insulating layer so as to penetrate the sealing resin. A second anodic via electrode is formed in the insulating layer disposed on the core part so as to penetrate the insulating layer. The core part is electrically drawn to a surface of the sealing resin through the first and second anodic via electrodes. The first anodic via electrode exposed at the surface of the sealing resin is connected to the anodic outer electrode.