BFC247055472 Capacitors

Film Capacitors

Film capacitors are specifically designed to replace traditional electrolytic capacitors in high power and high frequency applications. Typically, film capacitors incorporate either polyester or polypropylene as the dielectric. These capacitors devices are made of metal foil and dielectric material, which enables them to provide reliable, efficient, and low-cost operation.

BFC247055472 Application Field and Working Principle

The BFC247055472 film capacitor is a type of radial leaded capacitor. It is specially designed for pulse applications, usually in conjunction with a low-resistance energy-storage inductor, for multi-stage circuits, or for simple switching voltage regulators. The capacitor provides high impedance across a wide range of frequencies, and is suitable for pulse power circuits that require high current. It is extremely small in size and provides low inductive parasitic parameters with low ESR losses.

The application field of this PCB capacitor includes switching power supplies, DC/DC converters or inverters and other circuits with high current or high frequency requirements. In terms of working principles, the capacitor consists of two metal plates, connected with a dielectric layer. Electric charge is carried between these plates by a thin conductive material, usually aluminium or copper, with the dielectric used to reduce capacitance and increase applied voltage.

The dielectric of this particular capacitor type is a composite aramid film. This composite aramid is made of two segments of polyester film coated with a special chemical-resistant substance to extend the material’s life and reduce the possibility of leakage. The dielectric also provides a barrier against electrostatic discharge (ESD) and other electrostatic fields.

The capacitor is polarised, which means there is a positive and negative lead. The positive terminal is usually marked blue for easy identification. When the capacitor is connected between two conductors, one of them is called the cathode (-) and the other is called the anode (+).

In summary, the BFC247055472 film capacitor is a highly reliable and efficient device that can be used in high power and high-frequency applications, such as switching power supplies, DC/DC converters, or inverters. It features a composite aramid film as the dielectric, which provides a barrier against ESD and other electrostatic fields, as well as enables the capacitor to provide excellent performance over a wide range of frequencies.