KYOCERA AVX has launched a new traction-grade FFLK series of DC filtering capacitors, designed to bring safe, reliable, and long-life performance to demanding power applications.
The new FFLK DC film capacitors are built for tough environments like industrial motor drives and electric vehicle traction systems, where they must handle high power, elevated temperatures, and heavy shock and vibration.
At the same time, the series delivers higher current capability in smaller case sizes compared with both KYOCERA AVX’s earlier DC filtering products and competing capacitors.
They offer a more robust alternative to many commercial?grade solutions, and at a more attractive cost than several higher?end options.
FFLK capacitors come in cylindrical aluminum housings and use either dry-segmented or wet metallized polypropylene film, with UL 94 V-0 self-extinguishing thermoplastic resin for added safety. Depending on the variant, they feature female M6 or M10 screw connectors or male M8 or M20 connectors, plus a mechanical mounting bolt for secure installation.
The dielectric film at the heart of the series was developed and patented by KYOCERA AVX back in 1976 and features controlled self-healing, when a localized dielectric breakdown occurs, the film vaporizes the adjacent metal electrode, isolating the fault.
This prevents short circuits, avoids catastrophic failures, and allows the capacitor to keep operating, with only a gradual, controlled loss of capacitance over time.
At launch, the FFLK series covers a broad range of sizes, voltages, and capacitance values. The cylindrical housings range from 130 to 340 mm in height and 85 to 116 mm in diameter.
Dry-segmented variants are rated from 900 to 1,900 VDC, while the wet metallized (but oil-free) versions extend from 2,000 to 3,800 VDC. Capacitance spans 25 to 3,020 µF, with a typical tolerance of ±10%.
The series is fully compliant with applicable IEC, UL, EN, and RoHS standards for power electronics, railway applications, environmental testing, and flammability.
When used within their rated limits including voltage ranges and an operating temperature window of -40 °C to +95 °C, with a hot-spot temperature up to 70 °C, the capacitors are rated for around 100,000 hours of service life.
With high volumetric efficiency, solid economic value, and proven reliability in traction-grade applications, the FFLK series is positioned for wide use across industrial machinery and vehicle markets, from heavy-duty motor drives to next?gen EV traction systems.
Leadership Comment
“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,” added Perrin.
For more information about KYOCERA AVX’s new FFLK series DC filtering capacitors, check out the datasheet and the KYOCERA AVX Medium Power Film Capacitors catalog. To order, please visit DigiKey, Farnell, or Mouser Electronics. For specific shape and performance requests, contact Perrin Hardee in North America, Radek Pšenka in Europe, and Benjamin Soo in Asia.
To learn more about KYOCERA AVX’s extensive portfolio of power film and chip film capacitors, including medium power film capacitors for AC and DC filtering, tuning, and protection applications, one can visit the links embedded here.
