Abstract: There is provided a capacitor that has excellent transient response characteristics, can be used as a distributed constant type noise filter, and can be used as a composite component having two functions of a capacitor and a distributed constant type noise filter through further reduction of an ESL of a solid electrolytic capacitor with a solid electrolytic capacitor of which capacitance is easily increased. There are prepared two capacitor element pieces 121 where both ends of an anode body of each of the capacitor element pieces form anode lead-out portions 122 and 122 and both surfaces of a middle portion of the anode body form cathode lead-out portions 123. The two capacitor element pieces 121 and 121 are stacked so that the cathode lead-out portions 123 and 123 overlap with each other and the anode lead-out portions 122 and 122 are substantially orthogonal to each other. Accordingly, a capacitor element 120 is formed.

Abstract: There is provided an electrode material for electrolytic capacitor that attains an unprecedentedly high capacitance. The electrode material for electrolytic capacitor comprises a layer of valve metal particles furnished on the surface thereof with an oxide film, the layer having a porosity of 20 to 60% and a specific surface area of 30×103 to 400×103 cm2/cm3, wherein the valve metal particles are mixed together, with the particle diameters exhibiting a given distribution at least within the range of 0.005 to 0.1 ?m, and form a base material surface, and wherein the valve metal consists of aluminum, and wherein the composition ratio of Al/O of the layer of valve metal particles furnished on the surface thereof with the oxide film is within the range of 2.0 to 5.5. The electrode material thus realizes high capacitance.

Abstract: As a cathode foil, an etched aluminum foil is used, where a TiN film is prepared on the surface thereof by cathode arc plasma deposition process. As an anode foil, an etched aluminum foil is used, where a dielectric film is prepared on the surface thereof by a formation process. Winding together the anode foil along with the cathode foil and a separator, a capacitor element is prepared. While placing an organic semiconductor including a desired TCNQ complex sale in a bottomed cylindrical aluminum case and melting the TCNQ complex sale under heating on a heater heated to about 300° C., then, the capacitor element heated to about 250° C. is placed in the aluminum case, to impregnate the capacitor element with the melted TCNQ complex sale and immediately immerse the aluminum case in cooling water to cool and solidify the TCNQ complex salt. Then, the capacitor element is sealed with a resin to prepare a solid electrolytic capacitor.