QXK2E104KTPTZH

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Film capacitors (also known as film dielectric capacitors) are electrical components which employ a thin film as its dielectric, as opposed to the sheets of paper or other porous material used in paper capacitors. This article will elucidate the application field, and the working principle of the QXK2E104KTPTZH film capacitor.

Application Field

One of the main advantages of film capacitors is their extremely high ripple current tolerance. The ripple current is the variation in the level of current which most capacitors have to cope with but which have a large effect on their effective capacitance. As film capacitors are very tolerant of ripple current due to the thickness of their insulation (dielectric), they have become increasingly popular for use in power supplies, motor controllers, switch mode power supplies and other types of equipment which employ large current variations. Film capacitors are often used in place of electrolytic capacitors which can only cope with relatively low-level ripple currents.

High-temperature film capacitors are designed to operate reliably in applications involving high operating and temperature cycling temperatures. Applications that may benefit from the use of these capacitors include inverters, welders, power supplies, lighting ballasts and UPS systems.

The QXK2E104KTPTZH Film Capacitor is designed to operate reliably at rated working voltages up to 400V, and ambient temperatures ranging -55^oC to +125^oC. It is also capable of confirming to safety standards for electrical applications including UL, VDE and ENEC. The QXK2E104KTPTZH film capacitor offers high quality construction with a self-healing, self-extinguishing design.

Working Principle

At the heart of a film capacitor is the film dielectric, which is a thin plastic sheet that is placed between two metal plates. In DC applications, the termal displacement of electrons or electric energy is stored in the film. To achieve this, it is necessary to apply a voltage above the breakdown voltage, at which point the electrons are displaced and stored in the dielectric membrane of the capacitor, creating an electric field between the two metal plates. This electric field represents the created capacitance that the capacitor can hold.

In AC applications, the capacitive behaviour of the film capacitor is used to create an electronic filter. As the graph of the AC current fluctuates, each successive wave of the current is slightly delayed and suppressed by the capacitor, thus reducing its amplitude. This phenomenon produces a built-in filtering effect in the capacitor, blocking high frequencies and preventing them from interfering with the main AC current.

The QXK2E104KTPTZH film capacitor is also designed to have a low dielectric absorption ratio, which is the measure of the efficacy of the capacitor in storing energy. Low dielectric absorption ratio implies that the capacitor can store a large amount of energy within a specific voltage range even when there are sharp fluctuations in the level of the current.

Film capacitors are also typically very reliable and have a long projected life cycle. This is due to the thin film structure of these capacitors, which is much more resilient to constant fluctuations in temperature and current than the electrolytic capacitors on which it is modelled. This makes the QXK2E104KTPTZH ideal for harsh environments such as high-temperature industrial equipment, computers and data centres.

In summary, the QXK2E104KTPTZH Film Capacitor is a specialized electrical component designed for use in a wide range of applications, owing to its wide range of features, such as resilience to high ripple currents and excellent dielectric absorption ratio, making it suitable for use in harsh environments. It is also capable of confirming to various electrical safety standards.

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