935C2W3K-F

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Film Capacitors

Film capacitors are a class of capacitors that use thin plastic film as a dielectric. Different film capacitors may employ different materials as a dielectric, depending on their application. Commonly used electrical film materials include polyester, polypropylene, and polycarbonate, along with advanced materials like Volaprene, polyphenylene sulfide, and polystyrene. In terms of construction, film capacitors are very similar to ceramic capacitors. The main difference between the two is the use of different materials as dielectric.

935C2W3K-F Application Field and Working Principle

The 935C2W3K-F film capacitor is a type of miniaturized, wide-temperature-range film capacitor in SMD package. It is especially designed for use in AC and DC motors in a wide variety of applications. This capacitor features low ESR, a long-term performance, and great insulation. It is especially suitable for use in high-temperature applications, making it ideal for motors with frequent start-stop cycles.

The 935C2W3K-F film capacitor is composed of two metallic layers and a dielectric film. The two metallic layers act as the two plates of the capacitor. The capacitor relies on the dielectric film to store electric charge. As the electric vibrations pass through the film, tiny electrons are attracted and repelled between the two plates. This allows the capacitor to store an electric charge. Capacitance is determined by the thickness of the dielectric film and the area of the capacitor’s plates.

The 935C2W3K-F film capacitor features low ESR, which is determined by the type of dielectric material used. Good dielectrics such as polyester, polypropylene, and polycarbonate have excellent resistance to heat and moisture. This helps reduce ESR and increases the durability and longevity of the capacitor. The 935C2W3K-F film capacitor also has good electrical insulation and high thermal conductivity, allowing it to operate in a wide temperature range.

The main applications for the 935C2W3K-F film capacitor include AC and DC motor start-stop applications, as well as general motor control applications. This capacitor is particularly suitable for use in high-temperature applications, such as in semiconductor devices and high-temperature furnaces. By aiding in the start-stop motor operations, this capacitor helps increase the efficiency and lifespan of the motor.

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