BFC238582222

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Film Capacitors

Film capacitors, also known as plastic film capacitors, are composed of plastic film as the dielectric material, metal or etched foil element as the electrode material, and composed of two layers of film, vacuum or gas as dielectric medium, and the outer surface with insulating paint such as epoxy or polystyrene, and plastic shell as casing.

The plastic film used in film capacitors is a polymer such as polyester (PET), polycarbonate (PETP), polyether sulfone (PES), polysulfone (PS), and polyphenylene sulfide (PPS). As the most economical of the dielectric materials, the plastic films have very low dielectric loss and excellent temperature and frequency characteristics.

The BFC238582222 is a type of film capacitor that is usually used to filter and reduce the noise in electrical or electronic circuits, store energy, temporarily hold data, or provide a stable signal in AC applications. It is also commonly used for applications in audio, video, medical, and automotive products.

Working Principle

The BFC238582222 has two metal or etched foil elements that act as electrodes, and two thin layers of plastic film as the dielectric material between them. Each layer of film works independently of the other, so the capacitor can store energy across both layers. When an AC signal is applied, the capacitor behaves as a short circuit, and a DC signal is blocked.

The BFC238582222 has a dielectric constant that is determined by the thickness and type of the plastic film used. The combination of the higher dielectric constant and the thin thickness of the film allows the capacitor to achieve high intensity for a given volume, making it suitable for use in high-density electrical and electronic circuits.

By controlling the temperature and atmospheric pressure during production, the BFC238582222 can achieve a stable dielectric constant and high breakdown electric field. The performance of these capacitors is also stable over a wide temperature range. Additionally, it is resistant to mechanical shock, vibration, and aging, and is available in a variety of styles and sizes.

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