BFC237523331

Film Capacitors

A film capacitor, also known as a plastic film capacitor, is a type of capacitor characterized by very small capacitance values, very low losses and very tiny size. Compared with other capacitors such as ceramic capacitors, aluminium electrolytic capacitors and power capacitors, film capacitors are usually significantly lower in cost.

BFC237523331 is one of the most popular type of film capacitors, with typical fields of applications ranging from electronic ballast, audio coupling capacitors to general ac applications. It provides high insulation resistance, low dissipation factor and low temperature rise.

Working Principle

The BFC237523331 film capacitor is based on the principle of electrostatic storage of energy that involves two plates being separated by an insulating material called the dielectric. As soon as electric current flows through the capacitor plates, electric charges of opposite polarity generate an electric field between the two plates which is responsible for storing energy. When the electric current is no longer supplied to the plates, the electric field between the two plates continues to exist and this stored electric charge is responsible for producing and maintaining the electric field.

The dielectric material is usually aluminum oxide, polypropylene, polycarbonate, or a mixture of these materials. The choice of dielectric material is based on two criteria – dielectric charge capacity which determines the overall capacitance of the capacitor and dissipation factor which is the ratio of the power dissipated to the power stored in the capacitor.

Application Field

These BFC237523331 film capacitors are typically used in the applications which require very high frequencies, very small capacitance values and low losses. This includes applications like high speed resonant circuits, coupling capacitors, power electronics, ultrasonic detectors, medical equipment, stereo systems and acoustic headphones. These BFC237523331 film capacitors can also be used as power factor correction capacitors as they provide low temperature rise and high insulation resistance.

In addition to these applications, BFC237523331 film capacitors can also be used for AC filters, Snubber circuit, snubber capacitors, bleeder capacitor, pulse forming networks, power factor correction, coupling or decoupling or for DC blocking requirements.