EV POWER Kyocera‑avx launches traction dc capacitors

KYOCERA AVX, a manufacturer of advanced electronic components engineered to accelerate technological innovation and build a better future, released the new traction-grade FFLK series DC filtering capacitors. The new traction-grade FFLK series DC filtering film capacitors are designed to deliver safe, reliable, and long-lifetime performance in demanding DC filtering applications, including industrial motor control and electric vehicle traction systems exposed to hazards including high power, high temperature, and high shock and vibration.

FFLK series capacitors feature cylindrical aluminum form factors equipped with dry or wet metallized polypropylene film, UL94 V-0 self-extinguishing thermoplastic resin, female M6 or M10 connectors or male M8 or M20 connectors, and a mechanical mounting bolt. The unique dielectric film, developed and patented by KYOCERA AVX in 1976, exhibits controlled self-healing capabilities — isolating and neutralizing dielectric breakdowns by vaporizing the adjacent electrodes. This prevents short circuits, eliminates catastrophic failures, and maintains normal capacitor operation, save for a gradual loss of capacitance over time.

The new FFLK series launched with a wide variety of sizes, voltage ratings, and capacitance values. Its cylindrical cases measure 130–340mm high and 85–116mm in diameter. Variants equipped with dry segmented metallized polypropylene film are rated for 900–1,900VDC, while variants equipped with wet metallized polypropylene film (but without free oil) are rated for 2,000–3,800VDC. Capacitance values for the series extend from 25–3,020µF ±10%.

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The series is also compliant with all relevant IEC, UL, EN, and RoHS standards and directives for power electronics, railway applications, environmental testing, and flammability and rated for 100,000-hour lifetimes when operating within defined parameters, including the rated voltage range, operating temperatures extending from -40°C to +95°C, and a 70°C hot spot temperature.

The breadth of the new series — combined with benefits including high volumetric efficiency, economic value, and safe, reliable, long-lifetime performance in demanding traction applications — enables broad application in the industrial machinery and vehicle markets.

“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.”

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