Film capacitors deliver extremely stable capacitance and ESR in high humidity environments

Vishay Intertechnology has introduced a new series of metallized polypropylene AC filtering film capacitors optimized for high humidity environments. The Vishay Roederstein MKP1847H is the industry's first full-range AC filtering film capacitor series to withstand demanding temperature humidity bias (THB) testing — 85C, 85% RH for 1,000 hours at rated voltage — without altering its electrical characteristics. The capacitors released today are designed to ensure extremely stable capacitance and ESR values over a long service life under harsh environmental conditions during operation. The robust devices are ideal for input and output filtering in outdoor renewable energy inverters and critical applications such as UPS for sensitive datacenters. The capacitors feature segmented film and offer rated capacitance from 1µF to 35µF and low ESR down to 3mohm. The devices provide high ripple current capabilities up to 24.5A and rated voltages of 250VAC, 310VAC, 350VAC, and 480VAC.