MKP386M547085YT4

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Film capacitors are used extensively in electric apparatus, such as radios, television sets, and computers. The MKP386M547085YT4 is a film capacitor from KEMET, a global leader in the design and production of film capacitors. This application note provides an overview of this product’s applications and working principles.

Application Fields

The MKP386M547085YT4 is designed for use in a variety of applications in the electronics industry. It is a medium-voltage capacitor with a voltage rating of 4,000V DC. It is commonly used in high-voltage motors, generators, transformers, electric power supplies, and other similar applications. It is also suitable for use in high-voltage AC and pulse-discharge DC circuits, such as high-voltage flashlights, lasers, and other equipment.

The MKP386M547085YT4 is also suitable for use in high-frequency electronic equipment such as AM/FM radios, TVs, and audio amplifiers, as well as in high-precision measuring instruments.

Working Principle

A capacitor is an electrical component that stores energy in an electric field between two parallel conductive plates. The stored energy is then released when the plates are connected to an alternating current. The MKP386M547085YT4 is a film capacitor made from multiple layers of polyethylene terephthalate (PET). Each layer is coated with a dielectric material such as silver- or copper-coated aluminum oxide.

The multiple layers of the capacitor create a structure similar to that of a sandwich, with the dielectric material sandwiched between the conductive (metallic) layers. This arrangement creates an electric field between the plates, which stores energy. The amount of energy stored depends on the size of the electric field, which is determined by the capacitance of the capacitor.

The MKP386M547085YT4 is designed to be self-healing. In other words, when the capacitor is exposed to a short circuit, the dielectric material will breakdown and short circuit itself, dissipating the excess energy. This process prevents the capacitor from going up in smoke and avoids damage to other circuitry.

Conclusion

In conclusion, the MKP386M547085YT4 is a medium-voltage film capacitor, designed for use in a variety of electronic applications. It has a voltage rating of 4,000V DC and is suitable for use in high-voltage AC and pulse-discharge DC circuits, as well as in high-frequency electronic equipment and high-precision measuring instruments. Its self-healing capability makes it a reliable and safe device for use in a variety of applications.

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