| 摘要 |
PROBLEM TO BE SOLVED: To provide a solid-state electrolytic capacitor, having a large capacitance with respect to the outer package volume by making it into a structure such that it does not have any anode lead wires extruding from an anode body, and to provide its manufacturing method. SOLUTION: The solid-state electrolytic capacitor 10 includes a capacitor element formed with an oxide coating layer, a solid-state electrolytic layer, and a cathode extraction layer, in this order, on the surface of the anode body made by pressure-molding and sintering valve action metal powder. The solid-state electrolytic capacitor 10 comprises an anode body (porous portion 21) formed of powder of a first valve actio metal, such as tantalum, and a non-porous portion 20 formed at least on one side of the anode body. The non-porous portion 20 consists of a non-porous portion, formed of powder of another valve action metal, such as niobium, which has a lower melting point than the first valve action metal, or of the powder of the first valve action metal having a finer grain diameter than the one used for the porous anode body 21, and an anode terminal 12b so formed as to coat at least the surface of the non-porous portion 20. COPYRIGHT: (C)2007,JPO&INPIT
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