Vishay Extends Useful Life of 500 V 159 PUL-SI Series Snap-in Power Aluminum Capacitors

The Vishay BC components devices now offer a useful life of 5,000 hours at +105 °C

Vishay Intertechnology today announced that the company has extended the useful life of 500 V devices in its 159 PUL-SI series of snap-in power aluminum capacitors. For solar PV inverters, industrial motor control, and power supplies, the Vishay BC components devices now offer a useful life of 5,000 hours at +105 °C.

159 PUL-SI series, snap-in power aluminum capacitors, Vishay

Featuring a cylindrical aluminum case with a pressure relief valve, insulated with a blue sleeve, 159 PUL-SI capacitors are available in a variety of case sizes ranging from 22 x 25 mm to 35 x 60 mm. Offering rated voltages from 200 V to 500 V, the devices feature high ripple current to 2.80 A, maximum ESR down to 150 mΩ at 100 Hz, and a maximum operating temperature to +105 °C.

As polarized aluminum electrolytic capacitors with a non-solid electrolyte, the 159 PUL-SI series devices are ideally suited for smoothing, filtering, and energy storage in pulsed power applications. The RoHS-compliant capacitors are also available in a keyed polarity snap-in version.

Device Specification Table:

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 500 V

Category temperature range

-25 °C to +105 °C

Useful life at +105 °C

5,000 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


Samples and production quantities of the 159 PUL-SI series capacitors are available now, with lead times of 12 to 14 weeks.

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