Patent ID: 7436652
Filing Date: 2008-10-14
Classification: H01G,Y02E

Abstract:
1. A solid electrolyte capacitor comprising a jacketed capacitor element, the capacitor element being obtained by sequentially stacking a dielectric oxide film layer, a semiconductor layer and an electrically conducting layer on a surface of a valve-acting metal sintered body or electrically conducting oxide sintered body connected with an anode lead, wherein the thickness of the semiconductor layer in the vicinity of the anode lead-connection point on the sintered body surface connected with an anode lead is 5 μm or less, the thickness of the semiconductor layer in the portion excluding the vicinity of the anode lead-connection point is from 5 to 100 μm and the semiconductor layer is not present in a thickness of greater than 5 μm at a distance of at least 0.2 mm from the anode lead-connection point on the sintered body surface, and wherein the valve-acting metal sintered body is a tantalum sintered body having a CV of 100,000 μF·V/g or more or a niobium sintered body having a CV of 150,000 μF·V/g or more.