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    Vishay Intertechnology Snap-in Power Aluminum Capacitors Enable Higher Power Density

    Vishay Intertechnology, Inc. (NYSE: VSH) introduced a new series of miniature snap-in power aluminum electrolytic Capacitors that enable higher power density designs. The Vishay BCcomponents 193 PUR-SI series offers up to 30 % higher ripple current than standard solutions in similar case sizes while providing a longer useful life.

    Handling ripple currents up to 3.27 A, the devices released today allow designers to utilize fewer components to save board space and lower costs. Their long useful life of 5,000 hours at +105 °C permits use in demanding applications requiring more than 25 years of lifetime from capacitors in ambient temperatures up to +60 °C.

    Featuring a cylindrical aluminum case, insulated with a blue sleeve, 193 PUR-SI series devices feature rated voltages to 500 V in 25 compact case sizes ranging from 22 mm by 25 mm to 35 mm by 60 mm. The RoHS-compliant capacitors are also available with 3-pin keyed polarity snap-in terminals.

    As polarized aluminum electrolytic capacitors with a non-solid electrolyte, the devices are ideally suited for smoothing, buffering, and DC-Link filtering in switch mode power supplies, motor drives, solar inverters, industrial air conditioners, and welding equipment.

    Device Specification Table:

    Case size (D x L in mm)

    22 x 25 to 35 x 60

    Capacitance range

    47 µF to 820 µF


    ± 20 %

    Rated voltage

    400 V to 450 V

    500 V

    Category temperature range

    -40 °C to +105 °C

    -25 °C to +105 °C

    Useful life at +105 °C

    5,000 h

    Max. ESR at 100 Hz

    120 mΩ to 2800 mΩ

    Max. impedance at 10 kHz

    80 mΩ to 2060 mΩ

    Sectional specification

    IEC 60384-4 / EN130300

    Climatic category IEC 60038

    40 / 105 / 56

    25 / 105 / 56

    Samples and production quantities of the 193 PUR-SI series capacitors are available now, with lead times of 14 weeks. Pricing depends on capacitance and voltage rating.

    For more information, visit


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