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Film Capacitors

A film capacitor (also called a plastic film capacitor, film dielectric capacitor or film capacitance) is a capacitor that uses a thin plastic film as the dielectric, together with a prepostastically-stabilized, printed dark pattern off metal layer as the electrodes. Its main features are high dielectric constants, small size, low dissipation factor and long working life, making it a popular choice. The MKP386M447160JT5 is one such film capacitor, and in this article we will be looking at its application field and how it works.

Application Field

The MKP386M447160JT5 is a metallized polypropylene capacitor with a voltage rating of up to 400V. As a result, it is mainly used for applications with high voltage requirements. These include power factor corrective capacitors, DC link capacitors, motor starter capacitors, inrush current limiters, DC-to-DC converters, power supplies and automation systems. It is also suitable for use on high frequency oscillators, active filters, measuring instruments and other medium-to-high voltage equipment.

Working Principle

The MKP386M447160JT5 is a metallized polypropylene film capacitor, meaning it uses two metal layer evaporated on a thin polypropylene plastic film as its electrodes. The electrical properties of the polypropylene helps the capacitor store electrical charge and reduce energy loss. The capacitor is further limited by an epoxy or ceramic case, which further helps with dielectric strength and helps the capacitor to run for longer.

The metallization of the metal layers is done so as to maximize capacitance and reduce reactance, which is the tendency to produce a voltage or current at an angle other than the applied voltage or current. This is done by varying the distance between the metal layers or by increasing the amount of metal used. When a voltage is applied the capacitance increases, and when positive and negative voltage charges are applied, the capacitance will also change.

The capacitance itself is a measure of how much energy can be stored within the capacitor. The higher the capacitance, the more energy can be stored. The MKP386M447160JT5 has a high capacitance, allowing it to store higher amounts of energy and release it in a controlled manner when needed. This makes it particularly well-suited to applications that require high voltage operations and fast switching.

MyConclusion

The MKP386M447160JT5 is a high-voltage film capacitor which is suitable for many applications, particularly those that require a large capacitance and low reactance. Its metallized polypropylene film construction ensures a very high capacitance, making it very energy-efficient and reliable. As a result, the MKP386M447160JT5 is a popular choice for many high-voltage applications.

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