High-Voltage Multilayer Polymer Aluminum Electrolytic Capacitors with Polypyrrole as Cathode Materials

摘要

Due to a strong market demand for low ESR capacitors, conductive polymers have been introduced as cathode materials in both tantalum and aluminum electrolytic capacitors. However, it has been difficult to make such capacitors with high rated voltages due to high leakage currents. This paper presents key processes for making 25 V high-voltage multilayer polymer aluminum capacitors and discusses electrical properties of the capacitors.