475MKP275KHG

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Film capacitors are an essential part of any electrical system. These capacitors are composed of thin strips of dielectric material, such as plastic or polyester, that are wound together. They are usually cylindrical in shape, which makes them easy to install in tight spaces, and they are commonly used in a variety of applications due to their excellent electrical features. The 475MKP275KHG application field and working principles can help us better understand the advantages and disadvantages of film capacitors.

475MKP275KHG Features and Benefits

The 475MKP275KHG application field and working principles are well-suited for low-cost, high-reliability applications such as power filters, frequency dividers and VFD circuits. The excellent high frequency characteristics, low dielectric absorption, and very low distortion make it a great capacitor for these types of circuits. The MKP275KHG also has a great mechanical stability, which allows it to handle high frequencies without any degradation in performance. The capacity is also very stable over a wide range of temperatures, and it is also immune to moisture and corrosive atmospheres.

In terms of electrical characteristics, the 475MKP275KHG is a great choice for applications which require low current leakage, high breakdown voltage, high capacitance, low ESR, and high order winding. The MKP275KHG also has very low inductance, which makes it well-suited for high speed switching applications. In terms of thermal properties, it has an excellent operating temperature range of -40°C to +85°C, and a very low self-heating temperature.

Working Principle

The working principle of a film capacitor is based on Faraday’s law of electrolysis. This states that if an electrical current is passed through a solution containing electrolyte, then ions from the electrolytes will move in opposite directions and create an electrostatic field. This field is what creates the capacitance of the capacitor.

In a film capacitor, the dielectric layer is sandwiched between two layers of metal foils. When a voltage is applied to the capacitor, the electric field pushes electrons and ions back and forth between these two layers. This generates a charge on each of the layers, creating a voltage difference between them. The voltage difference between the two layers gives the capacitor its capacitance.

Applications & Limitations

The MKP275KHG film capacitors are widely used in many applications. They can be found in high-efficiency power filters, amplifier circuits, VFD circuits, and switch mode power supplies. They can also be used in low-frequency AC circuits, and offer some considerable advantages over ceramic capacitors in terms of stability, frequency characteristics, and temperature range. However, they do have some limitations, such as a relatively small capacitance range and a higher cost.

In summary, the MKP275KHG film capacitor is a great choice for applications which require low current leakage, high breakdown voltage, high capacitance, low ESR, and high order winding. Its excellent thermophysical and high-frequency characteristics make it ideal for low-cost, high-reliability power filter and amplifier circuits. Although the range of capacitance is relatively small and the cost is higher, its overall performance and reliability are still excellent.

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