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What is the difference between a “Polymer” or “Polymer Cathode” and standard Tantalum Electrolytic Capacitor?

April 26, 2017Capacitor difference electrolytic polymer standard tantalum

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What is the difference between a “Polymer” or “Polymer Cathode” and standard Tantalum Electrolytic Capacitor?

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Standard tantalum electrolytic capacitors have a cathode of MnO2 (Manganese Oxide). Recently developed polymer type tantalum electrolytic capacitors have the MnO2 cathode replaced by a highly conductive polymer (polypyrrole). Polymer cathode tantalum electrolytic capacitors feature reduced ESR, higher ripple current ratings and suppression of combustion (improved safety factor) as compared to MnO2 cathode types.