FOUNTAIN INN, SC, Apr 21, 2026 – KYOCERA AVX has released the FFLK series DC filtering film capacitors for industrial motor control and electric vehicle traction systems. The traction-grade capacitors operate under high power, high temperature, and shock and vibration conditions, with designs that support higher current handling in compact housings.
The FFLK series capacitors uses cylindrical aluminum housings with dry or wet metallized polypropylene film. The capacitors include UL94 V-0 self-extinguishing thermoplastic resin, connector options with female M6 or M10 and male M8 or M20 terminals, and a mechanical mounting bolt. The dielectric film, developed and patented by KYOCERA AVX in 1976, incorporates a controlled self-healing process that isolates breakdown events by vaporizing adjacent electrodes, preventing short circuits and maintaining operation with gradual capacitance loss.
The FFLK series is available in multiple sizes, voltage ratings, and capacitance values. Capacitor heights range from 130–340mm high and 85–116mm in diameter. Dry segmented metallized polypropylene film variants are rated from 900 VDC to 1,900 VDC. Wet metallized polypropylene film variants without free oil are rated from 2,000 VDC to 3,800 VDC. Capacitance values range from 25–3,020µF with a tolerance of ±10%.
The capacitors comply with IEC, UL, EN, and RoHS standards for power electronics, railway applications, environmental testing, and flammability. The series is rated for a 100,000-hour lifetime under specified conditions, including rated voltage, operating temperatures from -40°C to +95°C, and a 70°C hot spot temperature.
The FFLK series supports use in industrial machinery and vehicle systems requiring DC filtering. It replaces commercial-grade options in higher stress environments and provides an alternative to higher-cost designs while maintaining electrical and mechanical performance across applications.
“Our new traction-grade FFLK series DC filtering capacitors are smaller and more cost effective, capable, and robust than comparable solutions from both our portfolio and competitors’ and offer a full voltage range under one part number coding roof – addressing common size, cost, power handling, durability, safety, and specification challenges,” said Perrin Hardee, product marketing manager at KYOCERA AVX. “The controlled self-healing capabilities of our dielectric film far outperform the basic self-healing capabilities intrinsic to all dielectric films, making the FFLK series superior to most competing DC filtering film capacitors in rugged traction applications. The series also significantly outperforms aluminum electrolytic capacitors in these applications – reliably withstanding much higher levels of surge voltage with lower ESR and very high RMS currents to deliver longer lifetimes.”
Source: KYOCERA AVX
About KYOCERA AVX
Kyocera AVX manufactures and supplies electronic components and interconnect devices for global markets. The company produces capacitors, resistors, filters, couplers, sensors, connectors and antennas used in electronic systems. It serves original equipment manufacturers, distributors and electronic manufacturing services providers across automotive, telecommunications, industrial, medical, aerospace and consumer electronics industries. The business traces its origins to AVX Corporation, founded in 1972. It operates as part of the Kyocera Group. Kyocera AVX is headquartered in Fountain Inn, SC, and maintains manufacturing and research facilities worldwide. The company supports customers with component design, development and production services.