474MKP275KB

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A film capacitor is a type of capacitor that uses a thin plastic film as the dielectric, rather than the traditional paper, mica and ceramic dielectrics that are used in the other types of capacitors. A film capacitor is also known as a polyester capacitor, and it is used in a wide range of applications, primarily in the audio and lighting industries.

The 474MKP275KB is a special type of film capacitor that is used in a variety of applications. It has an aluminum polyethylene terephthalate (PET) dielectric with a polyester film, which offers excellent insulation and low loss characteristics. The 474MKP275KB has a voltage rating of 275VDC, a capacitance range of 30µF and 4kVAR, and an operating temperature range of -40°C to +105°C.

The 474MKP275KB is an ideal choice for applications where reliability is critical, such as motor control, electric motor control, lighting and inverters. This capacitor is also suitable for high-power applications, as the high dielectric strength and the low ESR (equivalent series resistance) allow for high currents to be passed through with minimal losses. The low dissipation factor and low self-inductance of the 474MKP275KB also make it suitable for use in switch-mode power supplies, as well as AC and DC ripple current applications.

The 474MKP275KB works by storing an electric charge between two conductive plates separated by an insulating material, which is the polyester film. When an external voltage is applied, an electric field is created in the capacitor, which allows electrons to flow from one plate to the other. The dielectric material in the capacitor, which is the polyester film, prevents electrons from flowing freely, thus causing a buildup of electric charge on the plates. The capacitance is determined by the size of the plates and the dielectric material that is used.

The working principle of a film capacitor is simple and reliable, making it suitable for a wide range of applications. It is used in motor control, lighting, inverters, switch-mode power supplies and AC and DC current applications. The high dielectric strength, low equivalent series resistance and low dissipation factor of the 474MKP275KB make it an ideal choice for applications requiring reliability, efficiency and long-term performance.

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