MKT1817282255W

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Film Capacitors

Film capacitors, also known as plastic film capacitors, are non-electrolytic capacitors that use a thin plastic film such as PET, PEN, FEP, PI, PP, PVA, Parylene or PVdF as the dielectric medium. This type of capacitor has a number of advantages over other types of capacitors, including low cost, wide range of value, good electrical properties and stability. Film capacitors can be used for many applications, from low frequency audio circuits to high frequency power supplies, and are used in AC line filtering and voltage stabilization.

MKT1817282255W Application Field and Working Principle

The MKT1817282255W is a polypropylene film capacitor that is used in a variety of applications. The MKT series is a radial leaded film capacitor with a temperature rating of -55 to +85°C, making it suitable for use in a wide range of environments. This capacitor is designed for AC applications up to 450V, making it ideal for use in power factor correction circuits, line-filter circuits, and other high-voltage applications. The MKT1817282255W is designed with a high capacitance to size ratio, allowing it to provide the same level of performance in a smaller package. This capacitor also has a low ESR, making it suitable for high-frequency applications.

The working principle of a film capacitor is the same as any other capacitor: it stores electrical energy in the form of an electric field created by two conducting plates. In a film capacitor, one of the plates is a plastic film with a metal electrode applied to it, while the other plate is a conductive metal coating. When a voltage is applied to the plates, electrons accumulate at the interfaces, creating an electric field that stores energy. When the voltage is removed, the electric field dissipates and the electrons are released, returning the capacitor to its original state.

The advantages of using film capacitors are numerous. They are capable of handling high voltages, they have a wide range of values, they have excellent temperature and voltage coefficient, and their capacitors age well. They can also handle high frequency applications better than electrolytic capacitors, are more reliable, and have a lower cost compared to electrolytic capacitors. Film capacitors are also available in a variety of form factors, allowing them to be used in applications where space is limited or other constraints are present.

In summary, the MKT1817282255W is a film capacitor suitable for a range of high voltage AC applications, such as power factor correction circuits and line-filter circuits. It has a temperature rating of -55 to +85°C, and a wide range of tolerances and values. Film capacitors are capable of handling high voltages, have excellent temperature and voltage coefficients, and are more reliable and cost effective than other types of capacitors. They are available in a variety of form factors and can be used in applications where space is limited or other constraints are present.

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