Vishay – High-vibration surface-mount aluminium electrolytic capacitors handle 30g (AFK_V Series)

Able to withstand continuous vibrations of up to 30g of stress, Cornell Dubilier Electronics (CDE) has introduced a ruggedized SMT aluminium electrolytic capacitor series. This durability makes the new AFK_V Series especially well-suited to defence and transportation applications, as well as in robotics.

The AFK_V Series offers low impedance and up to 5,000 hours life at 105C, at rated voltage. Available capacitance values range from 10μF to 6,800μF, with voltage ratings of 6.3VDC to 100VDC.

Packaged in a metal V-chip, SMT case, the new capacitors use a combination of three mechanical enhancements that provide greater vibration resistance as compared with the standard SMT package. A support terminal was added to suppress vibration of the moulded support base to the PCB, and therefore reduce contact stress. The support base was extended to create a high retention wall structure to better support the capacitor body. In an effort to reduce internal vibration of the capacitor winding, a larger diameter lead wire is used, which is very effective at eliminating internal lead breakage at critical stress points, says the company.

“By offering SMT aluminium electrolytics that are able to withstand high vibration, we give engineers a great solution to improve end-product durability,” said Bill Haddad, product manager. “Circuitry that is on-board rough terrain vehicles or in factory automation can reach high vibration levels.”

Other applications include industrial power conversion, lighting control and automotive applications.

The company has also announced ruggedized versions of its SMT hybrid polymer-aluminium electrolytics, now also able to withstand continuous vibrations of up to 30g of stress. This rating has been accomplished through electrical and mechanical redesign. Hybrid polymer-aluminium electrolytic capacitors combine the very low ESR and high ripple currents of conductive aluminium polymer capacitors with the higher voltage and capacitance ratings of aluminium electrolytic technology.

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