21FB4425A-F

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Film Capacitors

Film capacitors, also known as plastic film capacitors or dielectric film capacitors, are electronic components composed of a thin plastic film dielectric. These capacitors are used to store electrical charge and provide electrical energy when required. They are commonly used for radio frequency and high-frequency applications and are ideal for applications that require a high degree of reliability. The 21FB4425A-F is a film capacitor engineered to meet these demands.

Application Fields for the 21FB4425A-F

The 21FB4425A-F is a radial, axial-leaded metallized polyester film capacitor. This capacitor is mainly used in consumer electronics, automotive, industrial, and military applications. It is also used in noise suppression, filtering, signal decoupling, energy storage, and pulse applications. It has an operating temperature range of -55 to +105°C and a capacitance range of 0.001uF to 0.15uF. This capacitor has an excellent self-healing range and its robust construction makes it highly reliable. For these reasons, it is widely used in high-end circuits and embedded systems.

Working Principle of the 21FB4425A-F

A film capacitor consists of two metal plates with a thin dielectric material (plastic film) between them. When a voltage is applied across the plates, a charge is stored within the capacitor. This Charge is stored but not lost as long as a voltage is applied across the plates. When the voltage is removed from the capacitor, the charge dissipates quickly. The thickness of the plastic film and the area of the metal plates determine the capacitance of the 21FB4425A-F. As the charge stored in the capacitor increases, the internal resistance of the capacitor increases.

In addition, the 21FB4425A-F has an oxide coating on its metal plates in order to improve their performance in high-frequency applications. This coating reduces dielectric losses, which improves the device’s low-loss characteristics. The oxide coating also prevents tarnishing and corrosion, which preserves long-term performance of the capacitor.

Conclusion

The 21FB4425A-F is a film capacitor designed for use in a variety of applications which require high-reliability and performance. Its strong construction and excellent self-healing range makes it an ideal choice for consumer electronics, automotive, industrial, and military applications. Moreover, its oxide coating improves its performance at high frequencies and also improves its long-term reliability. With its wide capacitance range and low-loss characteristics, the 21FB4425A-F is a dependable performer that can be relied upon for its quality and reliability.

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