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Film Capacitors

A film capacitor consists of two or more conductive surfaces that are separated by an insulating material referred to as a dielectric. The dielectric material can normally be either polyester, polypropylene or polystyrene, each will perform differently when used in an application.

The BN074K0102K is a film capacitor which is useful in a range of different applications. A film capacitor can be used for power supply decoupling, smoothing, different filter types, timing, noise noise reduction, and voltage transformation.

Application Field

The BN074K0102K film capacitor is a chip type capacitor with extremely low ESR, which makes it highly suitable for power supply noise suppression and high frequency signal filtering in automotive applications. The -40 °C ~ 105 °C temperature range makes it suitable for a variety of different environments in automotive applications including engine compartment, battery box, outside air, and so on.

Furthermore, the BN074K0102K is suitable for data and control in the aerospace industry. The low ESR characteristic makes it perfect for high frequency signal filtering, which is often needed for control and stability in aircraft components. The low ESR and wide temperature range make the BN074K0102K suitable for a range of different aerospace applications.

Working Principle

A film capacitor works similarly to other types of capacitors, the only difference is the dielectric material used. The dielectric material is very thin, and it is usually made from layers of polyester, polypropylene, polystyrene, or other similar material. Electric fields are created between the two conductive surfaces when a voltage is applied, and the dielectric material prevents the electric field from directly travelling between the two conductive surfaces.

When the voltage is applied, the electric field sets up an electric field in the dielectric material, which causes the charge in the dielectric to start flowing and the current in the capacitor to increase. The current is then stopped by the electric field and this is what gives the capacitor its ability to store energy.

Because the dielectric is quite thin, this type of capacitor is able to achieve higher voltage ratings than other types of capacitors. Additionally, film capacitors are usually smaller than other types of capacitors for the same reason, which makes them ideal for use in high frequency applications where space is limited.

Conclusion

The BN074K0102K is a popular film capacitor with excellent ESR and wide temperature range that makes it ideal for a range of different applications. These applications include automotive, aerospace and medical, due to its ability to withstand high temperatures and offer high voltage ratings. Its working principle is based on the creation of an electric field in the dielectric material, which prevents current from travelling directly between the two conductive surfaces. This is what gives the capacitor its ability to store energy.

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