KEMET T543 Series Polymer High-Reliability Series (HRA) Capacitors are made of conductive organic polymer, which replaces the traditionally used MnO2 as the cathode plate of the capacitor. This results in very low ESR, improved capacitance retention at high frequency and improved ripple current handling capability. The polymer technology also exhibits a benign failure mode which eliminates the potential of ignition failures. Polymers may also be operated at voltages up to 90% of rated voltage for part types with rated voltages of ≤10V and up to 80% of rated voltage for part types >10V with equivalent or better reliability than traditional MnO2 capacitors operated at 50% of rated voltage. Applications for KEMET T543 Series Polymer HRA Capacitors include DC/DC converters, switch mode and point of load power supply, radar pulse capacitor and telecommunications (mobile phone and base station). Other general applications include decoupling and filtering in applications requiring low ESR or a benign failure mode.
