Power aluminium capacitors suit solar applications

20th December 2013
Source: Vishay
Posted By : Nat Bowers
Power aluminium capacitors suit solar applications

Expanding its portfolio of snap-in power aluminium capacitors, Vishay Intertechnology has introduced 159 PUL-SI series devices with voltage ratings of 500V at +105 °C. Featuring a long useful life, high ripple current to 2.80A at +105 °C, and maximum ESR down to 150 mΩ at 100Hz, these capacitor are designed for solar PV inverters, industrial motor controls, and power supplies.

Available in a selection of case sizes ranging from 22x25mm to 35x60mm, the snap-in capacitors are suppplied in a cylindrical aluminium case with a pressure relief valve, insulated with a blue sleeve. Operating over a temperature range from -25 to +105°C, the 159 PUL-SI series offers a capacitance range of 56-1800µF, useful life of 3,000-5,000 hours, and maximum impedance at 10kHz of 130-1950mΩ.

The 159 PUL-SI series are polarised aluminium electrolytic capacitors with a non-solid electrolyte. Therefore they are suited for smoothing, filtering, and energy storage in pulsed power applications. The capacitors are also available in a keyed polarity snap-in version.

Case size (D x L in mm)

22 x 25 to 35 x 60

Capacitance range

56 µF to 1800 µF


± 20 %

Ripple current at 120 Hz and + 105 °C

 0.48 A to 2.80 A 

Rated voltage

200 V to 450 V

500 V

Category temperature range

-25 °C to +105 °C

Useful life at +105 °C

5,000 hours

3,000 hours

Max. ESR at 100 Hz

150 mΩ to 3200 mΩ

MAx. impedance at 10 kHz

130 mΩ to 1950 mΩ

Sectional specification

IEC 60384-4/EN130300

Climatic category IEC 60068


With lead times of 10-12 weeks, the 159 PUL-SI series capacitors are available now for sampling and in production quantities.


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