Four-terminal snap-in aluminium electrolytic capacitors lower costs and increase stability

Vishay Intertechnology has introduced a new series of 400V and 450V snap-in, four-terminal aluminium electrolytic capacitors with improved ripple current capability at an ambient temperature of 105C in 15 large case sizes. Designed for power supplies and industrial and home appliance inverters, the BCcomponents 299 PHL-4TSI series reduces component counts and lowers costs while increasing mechanical stability and end-product lifetimes. Featuring a cylindrical aluminium case with pressure relief, insulated with a blue sleeve, the devices released today offer high ripple current from 2.45A to 6.77A, allowing designers to utilize fewer components to meet the requirements of applications connected to a three-phase mains. The capacitors have a high 105C temperature capability and long useful life of 5000h while still being able to withstand high ripple currents. The capacitors can replace banks of large screw terminal devices connected by a bus-bar with smaller parts connected by a PCB. This significantly lowers construction costs and enables soldering processing instead of manual mounting. With larger case sizes than standard two-terminal snap-in capacitors — ranging from 35mm x 50mm to 45mm x 100mm — the devices limit the number of components required. As polarized aluminum electrolytic capacitors with a non-solid electrolyte, the series devices are ideally suited for smoothing, filtering, and energy storage in pulsed power applications. The devices are RoHS-compliant; their four-terminal configuration provides increased mechanical stability and keyed polarity.