Screw aluminium capacitors pack more energy into storage

Miniaturised screw terminal aluminium capacitors deliver 10 per cent higher capacitance and 10 per cent better ripple current handling for a given can size than previous-generation devices, claims Vishay BCcomponents. The 501 PGM-ST devices allow designers to pack more energy storage into less space, says the company. They can be used for a range of applications and end products, including motor drives, heating ventilation and air conditioning (HVAC), welding inverters, uninterrupted power supplies (UPS), x-ray equipment, microgrid interfaces, wind turbines, and scientific test equipment.

The 501 PGM-ST polarised aluminium electrolytic capacitors are available with rated voltages of 400, 450, and 500V and capacitance values from 1,000 to 18,000 micro Farad. The cylindrical aluminium cases are insulated with a blue sleeve and pressure relief in the sealing disc. The capacitors offer a high rated ripple current to 30.2A and a useful life of 5,000 hours, both at +85 degrees C. The capacitors are lead (Pb)-free and RoHS-compliant.

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 1,000V maximum input.

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

Vishay Intertechnology manufactures discrete semiconductors (diodes, MOSFETs, and infra red optoelectronics) and passive electronic components (resistors, inductors, and capacitors). Its products are used in virtually all types of electronic devices and equipment, in the industrial, computing, automotive, consumer, telecommunications, military, aerospace, power supplies, and medical markets.

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