SOLID ELECTROLYTIC CAPACITOR

摘要

The solid electrolytic capacitor of this invention includes an anode; a dielectric film formed on the anode by anodic oxidation; a solid electrolytic layer formed on the dielectric film; and a cathode connected with the solid electrolytic layer, and the solid electrolytic layer is made from a conducting polymer obtained by doping, with dodecylbenzene sulfonic acid ions or alkylnaphthalene sulfonic acid ions with a carbon number of an alkyl group of 4 through 24 and sulfuric acid ions, a polymer that includes a heterocyclic monomer unit represented by the following general formula as a repeating unit: <CHEM> The solid electrolytic capacitor of this invention has large capacitance and exhibits low impedance in a high frequency region. <IMAGE>