193 PUR-SI Series Aluminum Electrolytic Capacitors

Vishay Intertechnology 193 PUR-SI series of miniature snap-in power aluminum electrolytic capacitors with voltage ratings of 550 V and 600 V. The Vishay BCcomponents devices deliver up to 30% higher ripple current than standard solutions in similar case sizes and offer a longer useful life. Traditionally, designers have used three 400 V to 450 V capacitors in series, with voltage balancing resistors across each device to handle DC bus voltages up to 1100 V – an approach that adds design complexity and potential failure points. With higher voltage ratings up to 600 V, the enhanced 193 PUR-SI series devices allow designers to achieve this voltage range with fewer components, eliminating the need for voltage-balancing circuits – saving PCB space and reducing BOM costs. The added voltage headroom extends capacitor lifetimes and enhances overall system reliability. Designed to withstand the demanding switching currents of today’s high-power converters, the 193 PUR-SI series devices handle rippler currents up to 3.27 A. Their long useful life of 5000 hours at +105°C permits use in demanding applications requiring more than 25 years of operation from capacitors in ambient temperature up to +60°C. Featuring a cylindrical aluminum case insulated with a blue sleeve, the devices offer capacitance from 47 µF to 820 µF 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 for more stable power distribution block (PDB) mounting.