Patent ID: 7362561
Filing Date: 2008-04-22
Classification: H01G

Abstract:
1. A solid electrolytic capacitor, provided with an anode, a cathode, and a dielectric layer formed by anodization of the anode, wherein, the anode includes a first metal layer and a second metal layer, the first metal layer is made of any of a metal selected from the group consisting of niobium, aluminum and tantalum, or an alloy containing any of a metal selected from the group consisting of niobium, aluminum and tantalum as a main component, the second metal layer contains any of a metal selected from the group consisting of titanium, zirconium and hafnium, and a part of a surface of the first metal layer is covered with the second metal layer, wherein an area of a region of the first metal layer covered with the second metal layer is between 0.5% and 10% of a surface area of the first metal layer.