SFA66S4K288B-F

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Film capacitors are invaluable electrical components widely used in electronic devices due to their various advantageous properties. SFA66S4K288B-F film capacitor is a top-notch product in the capacitor industry due to its efficient performance and long life. This article will explain the application field and working principles of SFA66S4K288B-F.

SFA66S4K288B-F film capacitor is mainly used in high voltage rectification circuit, high voltage DC power supply equipment, motor drive circuit, etc. Its application fields also include civil lighting, AC inverters, etc. The capacitor is capable of providing stable and reliable performance in all kind of operating circumstances. Its working principle is based on the principle of dielectric absorption.

The dielectric absorption of SFA66S4K288B-F is based on a certain amount of capacitance and its connection points. When a voltage is applied to one pole of the capacitor, electrons would move from the ground to positive potential node, thus creating an electric field inside the capacitor. The electric field will cause the electrons to move to the area of high potential node, resulting in a buildup of electric charge in the medium. This is known as the dielectric absorption effect. This effect occurs until the capacitor reaches its rated voltage and the electric charge is automatically discharged after the voltage decreases or reversed.

Another working principle of the SFA66S4K288B-F film capacitor is that of electric conduction. This effect occurs when a voltage is applied to the capacitor’s two nodes, allowing them to conduct current. As the current passes through the capacitor, its capacitance would increase and the voltage would decrease. Thus, the capacitor acts like an additional resistor in the circuit, providing an extra impedance and promoting higher impedance in the system.

In addition, the SFA66S4K288B-F film capacitor has good low temperature characteristics. It has a -55℃ to +105℃ temperature range, which is freeze-thaw, overvoltage, and overload resistant. The good temperature characteristics also ensure that the capacitor can effectively resist electrochemical corrosion, mechanical damage, and other destructive conditions.

Overall, the SFA66S4K288B-F film capacitor is an excellent electrical component that offers reliable, stable, and long-lasting performance. Its dielectric absorption and electric conduction effects make it an ideal choice for applications in high voltage rectification circuits, DC power supplies, and motor drives. The good low temperature characteristics of the capacitor further enhance its performance in harsh conditions and ensure a longer service life.

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