Passives

Capacitors boast enhanced ripple current handling

24th July 2019
Mick Elliott

A series of miniaturised screw terminal aluminum capacitors that deliver 10% higher capacitance and 10% better ripple current handling for a given can size than previous-generation devices, has been released by Vishay. They allow designers to pack more energy storage into less space.

The Vishay BC Components 501 PGM-ST series devices will be used in a wide range of applications and end products, including motor drives, HVAC, welding inverters, UPS, X-ray equipment, microgrid interfaces, wind turbines, and scientific test equipment.

The capacitors are available with rated voltages of 400V, 450V, and 500V and capacitance values from 1000µF to 18,000µF.

Featuring a cylindrical aluminum case insulated with a blue sleeve and pressure relief in their sealing disc, the capacitors ffer a high rated ripple current to 30.2A and a useful life of 5000 hours, both at + 85 °C.

The capacitors are lead (Pb)-free and RoHS compliant.

These polarised aluminum electrolytic capacitors with a non-solid electrolyte are suited for applications that demand high energy storage in a small form factor.

The 500V rating provides increased voltage headroom in motor drives, UPS, and solar inverters by allowing three-phase, 380V designs to be re-used in 480V systems by simply upgrading the DC-Link capacitors and enables solar inverter systems to be upgraded for 1000V maximum input.

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