SFA66S2K156B-F

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Film capacitors, also called plastic film capacitors, are a type of capacitor with a dielectric made of polyester, polypropylene, polycarbonate or polystyrene, or a combination of different materials. They are used extensively in a variety of applications, from audio crossover components to power supplies to control equipment.

The SFA66S2K156B-F is a film capacitor developed by Japanese manufacturer EPCOS. It is a metallized plastic film capacitor designed for AC motor applications. It has a rated voltage of 250VAC and a capacitance of 156pF. It is designed to operate in temperatures of -25°C to +105°C, and has a small case size of 5.08mm, making it ideal for use in tight spaces.

The SFA66S2K156B-F is a metallized polyester plastic film capacitor, also known as terpolymer. It is made of a metallized plastic film that is electrically conductive, with a dielectric layer sandwiched in between. The metallized plastic film layer provides high insulation, low leakage current, and long life. The metallized plastic film is then embedded with metal electrodes to form the capacitor.

The application field of the SFA66S2K156B-F is for AC motors, mainly for motors under 500V. The capacitor is a relatively small size, making it suitable for motor applications in tight spaces. The metallized plastic film provides a high insulation value, which helps reduce the risk of short-circuit failure in motor applications where high voltages and currents can impose increased stress on components.

The working principle of the SFA66S2K156B-F is based on the same concept as any other capacitor, with two metal plates separated by a dielectric material that stores electric charge. When the voltage across the capacitor is greater than the rated voltage, electric current flows through the capacitor. This causes a buildup of electric charge between the two plates, creating a capacitance that can store energy. This electric charge is then released when the voltage across the capacitor is lowered. When it is low, the electric charge is low and the capacitor acts as an open circuit, not allowing any current to flow.

In summary, the SFA66S2K156B-F is a film capacitor developed by EPCOS for AC motor applications. It has a rated voltage of 250VAC and a capacitance of 156pF. It has a metallized plastic film construction and a small case size, which makes it suitable for use in tight spaces. The capacitor works by storing electric charge in its dielectric, and releasing it when the voltage across the capacitor is lowered, making it a reliable and efficient power source for motors.

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