Vishay Intertechnology Inc. has launched a new series of miniaturized screw terminal aluminum capacitors that they claim delivers 10% higher capacitance and 10% better ripple current handling for a given can size than previous-generation devices, allowing designers to pack more energy storage into less space. The company said the new Vishay BCcomponents 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 501 PGM-ST series devices are available with rated voltages of 400 V, 450 V and 500 V and capacitance values from 1,000 µF to 18,000 µF. Featuring a cylindrical aluminum case insulated with a blue sleeve and pressure relief in their sealing disc, the new 501 PGM-ST capacitors offer a high rated ripple current to 30.2 A and a useful life of 5,000 hours, both at 85° C. The capacitors are lead-free and RoHS compliant.

As polarized aluminum electrolytic capacitors with a non-solid electrolyte, the 501 PGM-ST capacitors are ideally suited for applications that demand high energy storage in a small form factor. The 500 V rating provides increased voltage headroom in motor drives, UPS and solar inverters by allowing three-phase, 380 V designs to be re-used in 480 V systems by simply upgrading the DC-Link capacitors and enables solar inverter systems to be upgraded for 1,000 V maximum input.

Device Specification Table:

Case size (D x L in mm)

50 x 80 to 90 x 195

Capacitance range

1,000 µF to 18,000 µF


± 20%

Ripple current

5.49 A to 30.2 A

Rated voltage range

400 V to 500 V

Temperature range

-40° C to 85 °C

Useful life at 85° C

5,000 hours

Shelf life at 0 V, 85° C

1,000 hours

Sectional specification

IEC 60384-4/EN130300

Climatic category IEC 60068


Samples of selected values for the 501 PGM-ST capacitors are available now. Production quantities are available with lead times of 18 weeks.

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