BFC236948683

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Introduction of Film Capacitors

Film capacitors also known as plastic film capacitors are fixed capacitors which take a thin dielectric film such as polypropylene, polycarbonate, Teflon and PET as their dielectric medium. As the name implies, film capacitors consist of an insulating film, electrodes for the two sides of the capacitor, and a metallized electrode. The dielectric film used in film capacitors is extremely thin, from 3.0 µm to 7.5 µm, therefore the equivalent series inductance (ESL) is very small. Film capacitors are often used to reduce signal distortion in power electronic equipment, such as audio amplifiers, dimmer switches, inverter circuits, etc.

Application Field and Working Principle of BFC236948683

The BFC236948683 series film capacitor is widely used in the electronic industries. It consists of 2 separate coils, each with a central core. These coils are then wound around an insulating plastic film. The dielectric film is composed of multiple layers of polycarbonate and polyester, providing excellent thermal and chemical protection. The combination of two coils form a capacitor that has a capacitance value of 68nF and a rated voltage of 850V.

The working principle of the BFC236948683 series film capacitor is based on the capacitor charge storage effect. A voltage applied to the input of the capacitor, a current will flow in the form of an alternating current. This alternating current will charge the capacitor with a certain amount of electrical energy, which will then be stored inside the capacitor winding. When the voltage is removed, the capacitance will slowly discharge the stored energy, providing a small amount of current to the circuit. This charge/discharge phenomenon is what makes the BFC236948683 series film capacitor so effective at controlling signal distortion.

Advantages of Film Capacitors

Film capacitors offer many advantages over other types of capacitors. They are relatively smaller in size, which makes them ideal for applications where space is at a premium. They also have significantly lower ESR, ESL, and leakage current than other types of capacitors. This makes them more reliable with less signal distortion and less power consumption. Film capacitors also have high long-term stability and low tolerance variation, meaning they are more reliable than other types of capacitors. Finally, film capacitors have a longer lifespan, making them a more cost-effective and durable choice for many applications.

Conclusion

The BFC236948683 series film capacitor is a versatile and reliable type of capacitor that can be used in a wide range of applications. It has a capacitance of 68nF and a rated voltage of 850V. It is also significantly more reliable than other types of capacitors, with lower ESR, ESL and power consumption. Film capacitors are also more durable and cost-effective due to their longer lifespans and excellent long-term stability. This makes them a great choice for various applications, including audio amplifiers, dimmer switches, and inverter circuits.

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