For example, rather than using three 400V to 450V capacitors in series, with voltage balancing resistors across each device. “In addition, the added voltage headroom extends capacitor lifetimes and enhances overall system reliability.”Snap-in power capacitorsThe 193 PUR-SI series devices handle ripple currents up to 3.27 A. They offer capacitance from 47µF to 820µF in 25 compact case sizes ranging from 22mm x 25mm to 35mm x 60mm. The RoHS-compliant capacitors are also available with 3-pin keyed polarity snap-in terminals for more stable PCB mounting. impedance at 10 kHz 80 mΩ to 2700 mΩ Sectional specification IEC 60384-4 / EN130300 Climatic category IEC 60038 40 / 105 / 56 25 / 105 / 56More information is on the Vishay website.