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Film Capacitors

Film capacitors, also known as polyester capacitors, are varistors that have a dielectric mostly made of metalized paper, PEN (polyethylene naphthalate) or PET (polyethylene terephthalate) films. As one of the most widely used capacitors, film capacitors are suitable for a wide range of applications. Because of their high quality and excellent performance, film capacitors are integrated in various electronic appliances, including radio transmitters, amplifiers, industrial electronics and television sets. In this article, we will discuss the application fields of BFC247956204 and its working principle.

Application Fields of the BFC247956204

BFC247956204 film capacitors are especially suitable for filters, timing, bypass, energy storage, motor start, snubbing and pulse purpose, or other applications where high-grade capacitors are needed. They serve as energy storage components in power supply circuits, to reduce AC harmonic distortion, to reduce general voltage harmonics, as motor-start capacitors, as suppressors for signal-level disturbances, and as tuned circuits to filter out AC and DC signals. They can also be used to ensure the smooth operation of other circuits that have high current flow requirements.

The BFC247956204 is available in a variety of package sizes, including axial lead, radial lead, and surface mount packages. It is rated for a voltage of up to 250VAC and a capacitance of up to 1µF. The capacitor has a low dissipation factor, low internal self-inductance and low equivalent series resistance and is UL approved. Until now, many designers prefer to use BFC247956204 film capacitors in their applications due to its good performance.

Working Principle

BFC247956204 capacitors share the same working principle as other film capacitors, which is based on the Generation of Stray Electromagnetic (ESG) fields. When a voltage is applied to the capacitor, an electric field is created within the capacitor’s internal electrodes and core material, which then sets up an uneven electromagnetic field within the capacitor. This uneven electromagnetic field leads to a separation of charge between the capacitor’s plates, which creates a potential voltage across the plates.

The dielectric material is placed between the plates of a film capacitor, and acts as an insulator, preventing the voltage from dissipating across the plates. As a result, a resonance occurs in the dielectric, allowing the passive capacitor to store the voltage. This stored energy can then be used for some practical purpose, depending on the application of the capacitors.

Conclusion

In conclusion, the BFC247956204 film capacitor is highly reliable and offers excellent performance in various applications. It is used in many designs such as filters, timing, bypass, energy storage, motor start, snubbing and pulse purpose. Its working principle is based on Generation of Stray Electromagnetic (ESG) fields, and the dielectric material between its plates helps to store the voltage and release it when required.

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