Description :
Capacitor ranges PM06, PM 89, PM 90, PM 94 and PM 96 are specially manufactured for use in switch mode power supplies.
EUROFARAD 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 gives very low impedance values at high frequencies.
These models are recommended for use in a frequency range from 20/30 kHz to 1 MHz. Their performances are comparable, or sometimes better than the X7R ceramic capacitors, and they are available in almost identical sizes.
At such frequencies, capacitors with liquid or solid electrolyte become
inefficient.
Main characteristics of these capacitors :
● Small size
● Self healing properties
● High temperature range
● High RMS current
● High voltage gradient
● Low ESR and low inductance
● Light weight
● No variation of capacitance versus applied voltage.
The evolution of the different characteristics in fonction of frequency or temperature are determining factors when it comes to choosing adequate capacitors for Military, Space, Professional and Industrial applications.

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