AC filter capacitors offered in a compact and robust form

TDK Corporation has a new series of EPCOS MKP AC capacitors for filter applications. The elements of the B33331V* series are intended for a rated voltage of 460VRMS, corresponding to a peak voltage of 650V, and include a capacitance range from 2µF to 50µF. Both the cans and the tops are built of aluminium, producing an overall design that is robust. Depending on the type, the size ranges from only 30mm x 55mm to 50mm x 100mm (D x H). The reliability of the new capacitors, even under severe conditions, has been confirmed by a temperature, humidity, bias (THB) test at 85C, 85% relative humidity and an applied rated voltage for 1000 hours. In compliance with IEC 61071, the life expectancy is at least 100,000 hours. In the event of extreme pressure in the capacitor case due to an overload, the integrated overpressure disconnection safety device isolates both terminals from the winding. The devices can be applied as output filters of photovoltaic inverters, frequency converters and UPS.