BFC2370GL202

Film Capacitors

A film capacitor, also known as a plastic film capacitor, is a type of capacitor primarily constructed of a plastic film as the dielectric, sometimes combined with paper as a carrier of electrodes and leads for terminals, and is often impregnated with other materials to add features, such as flame retardant or Corrosion blocking, while maintaining the benefits of a film dielectric.

BFC2370GL202 is a type of a film capacitor manufactured by Guangdong Bochuan Electronic Co Ltd. This capacitor has a low equivalent series resistance (ESR) and excellent heat dissipation. It is designed to achieve high capacitance, especially at high frequencies. Apart from this, BFC2370GL202 also has high stability and endurance which makes it an ideal choice for applications that require long-term stability, such as in power supply line filter or ripple current filter.

Working Principle

A film capacitor works on the principle of Faraday\'s Law of electrostatics. This principle states that when a voltage is applied across a conductor, electric charges will collect on it and induce an electric field. This electric field is as strong as the amount of voltage applied and will remain until it is removed. This collected electric charge is known as capacitance, and the combination of the conductor and electric field is called a capacitor.

A film capacitor is constructed of multiple microscopic layers of a special plastic film to form the dielectric between two metal plates. When a voltage is applied across the capacitor, electric charges collect on the microscopic layers of plastic film, creating additional dielectric layers between the plates. The more dielectric layers created, the higher the capacitance of the film capacitor. As the voltage is increased, the capacitance of the film capacitor increases as well, resulting in a higher charge capacity.

Applications

BFC2370GL202 is mainly used in various power supply line filter or ripple current filter applications. It can handle up to 800V peak impulse voltage and provides excellent surge current capability. It is commonly used in UPS (uninterruptible power supply) systems, inverters, phase reactors, and motor control.

Apart from power conversion applications, BFC2370GL202 is also used for motor start or run applications in home appliances, like refrigerators, washing machines, vacuum cleaners and pumps. It is also suitable for AC motors, welding and capacitor discharge welding machines, current sources, and AC servo systems.

Film capacitors are also used in oil-filled switches, DC filters, high-frequency applications, and load reactors. In addition, film capacitors are increasingly being used in solar photovoltaic (PV) system inverters and PV modules as well.