BFC2373GM474MI

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What Are Film Capacitors?

Film capacitors are a type of capacitor that is composed of plastic films featuring substrates that are separated by several layers of metal or carbon components. It functions similarly to a standard capacitor, with electrical charge being created in the dielectric material between two metal electrodes. This type of capacitor has a higher dielectric strength compared to ceramic and multilayer ceramic capacitors, with a wide range of insulation values available.

Film capacitors are known for their ability to offer high-stability characteristics and are also often used in high-frequency applications. Additionally, film capacitors boast a high ripple current capacity and low-impedance value at high frequencies, offering excellent thermal shock and high-voltage endurance.

BFC2373GM474MI Application Field and Working Principle

The BFC2373GM474MI is a type of film capacitors used to store electrical charge for energy storage systems. It features a cylindrical aluminium case with a hermetically sealed welded lid that helps keep its components safe. The BFC2373GM474MI is specially equipped for a range of temperature conditions, from -55 degree Celsius to up to 105 degree Celsius. Application fields for this type of capacitor include electric tools, computers, and household appliances.

The BFC2373GM474MI film capacitor uses the dielectric film as an insulator between its plates. One of the plates is connected to the positive voltage-source, while the other is connected to the negative. The resulting electrical field between the plates causes an electrical charge to be stored between them. When the electrical field is dissipated through a resistor, a current is induced and the stored charge is slowly released.

The BFC2373GM474MI features an integrated wound construction that ensures a low ohmic resistance as well as reduced ESR and ESL values. The capacitors also boast excellent noise-suppression qualities, thanks to their high-frequency characteristics and low inductance levels. This makes them ideal for applications involving switching power supplies and high-frequency circuits.

Conclusion

Film capacitors, such as the BFC2373GM474MI, are designed for high-power or high-frequency applications, offering excellent stability and noise-suppression capabilities. These capacitors use a dielectric film as an insulator between two plates, the positive voltage-source and the negative. The resulting electrical field between the plates causes an electrical charge, which can be induced into current when dissipated through a resistor.

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