Patent ID: 7443655

Claim:
A capacitor comprising: a first capacitor element including: a valve metal sheet having a porous layer on a first surface thereof, a dielectric film formed on the porous layer, a solid electrolytic layer formed on the dielectric film, a collector layer formed on the solid electrolytic layer, a first through-hole electrode conducting with the collector layer, being insulated from the valve metal sheet, and penetrating the valve metal sheet from the first surface to a second surface opposing the first surface, and an insulating film provided on the second surface and electrically insulating the first through-hole electrode from the valve metal sheet; and a second capacitor element including: a dielectric layer, a first electrode electrically coupled to the first through-hole electrode and a second electrode electrically coupled to the valve metal sheet, the first electrode and the second electrode being insulated from each other via the dielectric layer, second through-hole electrodes penetrating the dielectric layer, being coupled to the first electrode, and being insulated from the second electrode, and lead-out portions of the second electrode exposed from the dielectric layer, wherein the second through-hole electrodes and the lead-out portions are arranged alternately, and the second capacitor element is laminated on a side of the second surface of the valve metal sheet constituting the first capacitor element.