BFC2373FF225MI

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Film capacitors are a type of capacitor consisting of one or multiple layers of a thin film material such as polyester, polycarbonate, or polypropylene as the dielectric material. Film capacitors are used in a wide variety of applications, including high speed switching, AC line filtering, AC motor starting and running, lighting ballast, automotive electronics power supply, frequency control, and data communications. The BFC2373FF225MI is one such film capacitor, and is particularly well suited for AC line filtering applications.

Description

The BFC2373FF225MI is a surface mount film capacitor with a low ESR value and high frequency characteristics due to its unique construction. It has an approximate capacitance of 4700pF at a rated voltage of 63VAC and a surge voltage of 500VAC. The lead-free capacitor is suitable for temperatures from -40°C to +125°C, and has a capacitance tolerance of ±20%. The capacitor has a plastic case, is non-polar, and is designed to be used as a direct replacement for a standard film capacitors. The lead spacing between terminals is 5.8mm and the lead length is 16mm.

Applications

The BFC2373FF225MI film capacitor is typically used for AC line filtering applications such as power supplies and household appliances. It is also used in DC to AC inverters for power conditioning, and in motor drives for motor speed control. The low ESR of the capacitor makes it ideal for these applications. As it is a film capacitor, it can handle higher voltage and temperature than ceramic capacitors.

Working Principle

The working principle of the BFC2373FF225MI film capacitor is the same as that of other film capacitors. It consists of one or more layers of a dielectric material, which is usually some type of plastic. When the capacitor is placed in a circuit, the electric field between the plates attracts and repels the electrons, creating an electrical charge and stored energy. As current flows through the circuit, it opposes the charge, and this allows the capacitor to act as a filter by blocking certain frequencies while allowing others to pass.

Conclusion

The BFC2373FF225MI is a film capacitor that is commonly used in AC line filtering applications. It has a low ESR and a capacitance tolerance of ±20%, making it a great choice for these applications. The capacitor is non-polar and can handle higher voltages and temperatures than other types of capacitors. The working principle of the capacitor is the same as that of other film capacitors, which is to create an electric field between the plates that can filter certain frequencies while passing others.

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