Solid electrolyte capacitor and method for manufacturing same

A manufacturing method of a solid electrolytic capacitor comprising:

• an anode foil formation process of forming anode foil;
• and
• a conductive polymer layer formation process of forming a conductive polymer layer between the anode foil and a cathode body,
• wherein:
• the anode foil formation process includes an enlargement process of forming tunnel-shaped etching pits on a surface layer of the anode foil, and a chemical treatment process of forming a dielectric oxide film layer on a surface layer of the anode foil and a pseudo boehmite layer on the dielectric oxide film layer,
• in the chemical treatment process, an amount of the pseudo boehmite layer is adjusted to 0.4 mg·cm−2 to 1.8 mg·cm−2, and
• in the conductive polymer layer formation process, conductive polymer solution including the conductive polymer is attached to at least the anode foil.