BFC2370FF123

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Film Capacitors

Film capacitors are composed of two metal electrodes placed opposite to each other and separated by a dielectric film. The metal electrodes are usually made of aluminium, and the dielectric film is typically made of polyester. In modern applications, the film may be composed of other materials such as polypropylene or extended temperature epoxies. As compared to conventional capacitors, film capacitors tend to offer better stability and high current density. Due to their size, film capacitors also have a higher energy density.

BFC2370FF123 Application Field and Working Principle

BFC2370FF123 is a type of film capacitor designed for use in switched-mode power supplies. It features an extended temperature range (from -55 ℃ to +150 ℃) with a low ESR design. This makes it suitable for use in a wide range of motor controls and high frequency switching applications.

The BFC2370FF123 utilizes a modified polyester dielectric film as the insulating material between its two electrodes. This capacitance is achieved by means of a dielectric layer that is very thin in comparison to the width of the electrodes, reducing the overall capacitance. The capacitance of the BFC2370FF123 is determined by the surface area of its electrodes and the dielectric constant between them. As the voltage across the capacitor increases, its capacitance decreases. The dielectric constant of the BFC2370FF123 varies with temperature, resulting in an increase in capacitance at higher temperatures.

The BFC2370FF123 also features an inherent self-healing process, which helps prevent catastrophes from occurring due to overheating or excessive leakage current. This self-healing is achieved through the dielectric\'s pyroelectric behavior, which causes a localized current flow during applied voltage. This localized current immediately repairs any broken connections in the electrodes, allowing the capacitor to return to normal operation.

The BFC2370FF123, due to its wide temperature range, low esr, and self-healing capabilities, is a suitable choice for control applications, precision motor control, power conversion, and power conditioning. It is also suitable for use in automotive, industrial, and consumer applications.

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