Miniature Devices Offer Increased Ripple Current to 5.05 A and Useful Life of 5,000 Hours at 85 °C

MALVERN, Pa. — April 15, 2020 — Vishay Intertechnology, Inc. today introduced a new series of miniature snap-in power aluminum electrolytic capacitors that enables higher power density designs. The Vishay BCcomponents 257 PRM-SI series offers up to 20 % higher ripple current than previous-generation solutions in case sizes that are up to 20 % smaller, while providing longer useful life to 5,000 hours at 85 °C.

With ripple currents up to 5.05 A, the devices released today allow designers to utilize fewer components to save board space and lower costs. Featuring a cylindrical aluminum case, insulated with a blue sleeve, 257 PRM-SI series capacitors feature rated voltages to 500 V in 25 compact case sizes ranging from 22 mm by 25 mm to 35 mm by 60 mm. The RoHS-compliant devices are also available with 3-pin keyed polarity snap-in terminals.

As polarized aluminum electrolytic capacitors with a non-solid electrolyte, the devices are ideally suited for smoothing, buffering, and DC-Link filtering in switch mode power supplies used in medical, consumer welding, and test and measurement equipment, in addition to general industrial control and audio / video system applications.

Device Specification Table:

Case size (D x L in mm)	22 x 25 to 35 x 60
Capacitance range	56 µF to 3300 µF
Tolerance	± 20 %
Rated voltage	200 V to 450 V	500 V
Category temperature range	-40 °C to +85 °C	-25 °C to +85 °C
Useful life at +85 °C	5,000 h
Max. ESR at 100 Hz	70 mΩ to 3740 mΩ
Max. impedance at 10 kHz	60 mΩ to 3240 mΩ
Sectional specification	IEC 60384-4 / EN130300
Climatic category IEC 60038	40 / 85 / 56	25 / 85 / 56

Samples and production quantities of the 257 PRM-SI series capacitors are available now, with lead times of 14 weeks. 

Source：http://www.vishay.com/