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Vishay Intertechnology Extends Rated Voltage of 157 PUM-SI Snap-in Power Aluminum Electrolytic Capacitors to 500 V for Solar Inverters and Industrial Motor Control


MALVERN, Pa., July 28, 2015 (GLOBE NEWSWIRE) -- Vishay Intertechnology, Inc. (NYSE: VSH) today announced that it has extended its 157 PUM-SI series of ultra-miniature snap-in power aluminum electrolytic capacitors with a higher rated voltage of 500 V. Designed for power supplies, industrial motor controls, and solar PV inverters, the enhanced devices save board space and lower costs by allowing designers to utilize one component instead of two 250 V capacitors.

Featuring a cylindrical aluminum case, insulated with a blue sleeve, the Vishay BCcomponents snap-in capacitors are available in 23 case sizes ranging from 22 x 25 mm to 35 x 60 mm. At 500 V, the devices feature a maximum operating temperature to +85 °C and a long useful life of ≥ 5,000 hours.

As polarized aluminum electrolytic capacitors with a non-solid electrolyte, 157 PUM-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 range56 µF to 2200 µF
Tolerance± 20 %
Ripple current at 120 Hz and +85 °C0.68 A to 3.68 A
Rated voltage200 V, 250 V     400 V, 450 V, 500 V
Category temperature range-25 °C to +85 °C
Useful life at +85 °C5,000 h
Max. ESR at 100 Hz150 mΩ to 3540 mΩ
Max. impedance at 10 kHz105 mΩ to 2930 mΩ
Sectional specificationIEC 60384-4/EN130300
Climatic category IEC 6003825/85/56

Samples and production quantities of the 157 PUM-SI series capacitors are available now, with lead times of 10 to 14 weeks.


Snap-in aluminum electrolytic capacitors

Check distributor stock on the Vishay website.

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Vishay Intertechnology, Inc., a Fortune 1000 Company listed on the NYSE (VSH), is one of the world's largest manufacturers of discrete semiconductors (diodes, MOSFETs, and infrared optoelectronics) and passive electronic components (resistors, inductors, and capacitors). These components 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. Vishay's product innovations, successful acquisition strategy, and "one-stop shop" service have made it a global industry leader. Vishay can be found on the Internet at

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Link to datasheet: (157 PUM-SI)

Link to product photo:

For more information please contact: Vishay Intertechnology Andrew Post, +1 610 251-5287

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