Research on production process of polymer electrolyte tantalum capacitors

This paper studied film-forming process of high frequency and low ESR organic chip solid-electrolyte tantalum capacitor employing PEDOT as a cathode material.Particularly,the influence of different polymerized temperatures,concentration of doping agent and solvent evaporated temperature on ESR of chip solid tantalum electrolytic capacitor was discussed.The results showed that desirable PEDOT film is achieved when polymerized temperature was about 0 to 10℃,concentration of doping agent was 3% and solvent evaporated temperature was 80℃.As a result,the obtained organic chip tantalum capacitor exhibit lower ESR and better frequency characteristic than conventional capacitor.