Passive Components


SMPS capacitors

24 July 2013 Passive Components

The range of capacitors manufactured by Eurofarad for use in switch mode power supplies (SMPS) includes the PM06, PM 89, PM 90, PM 94 and PM 96 families for use in a frequency range from 20/30 kHz to 1 MHz – frequencies at which capacitors with a liquid or solid electrolyte become inefficient.

The company manufactures film capacitors using most of the technologies available, especially polyester, polypropylene and polycarbonate films which have good intrinsic properties suited to certain applications where current, temperature, power and high voltage are very important parameters.

For manufacturing filtering capacitors for high-frequency switch mode power supplies, Eurofarad uses mainly P.E.T. and P.E.N. polyester films. The construction of the electrodes aims at reducing the series inductance value which is the main cause of resonance. This feature, together with low series resistance values, ensures very low impedance at high frequencies.

The capacitors’ performance is comparable or sometimes better than X7R ceramic capacitors, and they are available in almost identical sizes. They feature self-healing properties and can handle high temperatures and high RMS currents.



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