C870CF45400SG0J

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Film Capacitors

Film capacitors (also known as plastic film capacitors, polyester capacitors, or dielectric film capacitors) are a type of capacitor that uses a thin plastic film as the dielectric and are mostly used in high-frequency electronic circuits. They are sometimes referred to as “flexible capacitors” because of their ability to bend and conform to varying shapes. The C870CF45400SG0J is a highly-versatile film capacitor that can be used in a wide variety of applications, including motor control, lighting, audio, and RF applications.

C870CF45400SG0J Application Field

The C870CF45400SG0J film capacitor is designed for high voltage, high ripple current applications. It features a rated operating voltage up to 3kVdc and a maximum ripple current rating of 500A, making it well-suited for high voltage applications such as motor control, power supplies, inverters, and lighting applications. Additionally, the C870CF45400SG0J features a low ESR rating and great frequency characteristics, which make it well-suited for audio and RF applications as well.

C870CF45400SG0J Working Principle

Film capacitors use a thin plastic film (usually polyester or polypropylene) as their dielectric. This film is dielectrically charged when a voltage is applied across its terminals. The charge on the film attracts electric charge to its surfaces and produces a "capacitance" field, essentially storing the electrical energy. This stored electrical energy is then released when the voltage across the film is reduced, allowing it to act like a capacitor and hold a charge though a circuit.

The characteristics of the C870CF45400SG0J film capacitor depend on the type of plastic film and its thickness. Thicker films with higher dielectric constants result in higher capacitance and more leakage current. Thinner films generally have higher ESR (Equivalent Series Resistance) and are therefore better suited for higher frequency applications, such as audio or RF applications.

Conclusion

The C870CF45400SG0J film capacitor is a versatile and high-performance capacitor designed for a variety of applications. It is well-suited for high-voltage, high-ripple current applications such as motor control, power supplies, inverters, and lighting. Additionally, its low ESR rating and great frequency characteristics make it suitable for audio and RF applications as well. By using the appropriate type of plastic film, the C870CF45400SG0J can be tailored to specific application requirements, making it a very versatile component.

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