Super Farad Capacitor Film

Metallized polyprop… Metallized polyeste… Xiamen Faratronic Co.,Ltd., is one of the leading professional manufacturers of film capacitor in the world. The total annual output is 3 billion pcs for film capacitors in 2007 and ranked No. 3 in the world.

For film capacitors it is usually very small. When performing measurements, it must generally be taken into consideration that every temper-ature change is accompanied by a relative humidity change, which will affect the measurement (as described in section 2.2.3). Changes caused by humidity variations remain within the scatter

An M ( metallization) is prefixed to the short identification code of capacitors with metallized films. *) MFP and MFT capacitors are constructed using a combination of metal foils and metallized plastic films. They are not covered by DIN EN 60062:2005. The following table is a summary of important technical data.

The capacitance of a plastic film capacitor will undergo a reversible change of value in relation to any change in the ambient humidity. Depending on the type of capacitor design, both the dielec-tric and the effective air gap between the films will react to changes in the ambient humidity, which will thus affect the measured capacitance.

The most important reliability feature of film capacitors is their self-healing capability, i.e. their abil-ity to clear faults (such as pores or impurities in the film) under the influence of a voltage. The metal coatings, vacuum-deposited directly onto the plastic film, are only 20 ... 50 nm thick.

A capacitor's ability to withstand vibration (e.g. as occurs in applications involving rotating machin-ery), is tested to IEC60068-2-6:2007. EPCOS offers film capacitors especially designed for operation under more severe vibration regimes, such as those found in automotive applications. Further information available upon re-quest.