QXP2G105JRP7FX

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Film Capacitors

The QXP2G105JRP7FX is a Film Capacitor, a device that stores electrical energy, especially in a large number of chemical forms, such as electrostatic capacitance. Film capacitors are also known as polyester capacitors, plastic capacitors, and Mylar capacitors, among other names. Film capacitors are divided into two main categories: film and foil capacitors.

Application Field of Film Capacitors

Film capacitors are used in a wide range of applications, including audio, automotive, telecom, medical, instrumentation, fire/security, and control systems. They can be used for filtering, smoothing, resonant systems, pulse discharge applications, and DC-blocking, to name a few. Film capacitors can also be used in snubbers, where they can act as a low-impedance surge limiter and protect resistors, motors, and other components from the effects of high voltage and current spikes.

Working Principle of Film Capacitors

The working principle of a film capacitor depends on its electrical properties. Unlike electrolytic capacitors, film capacitors do not use a liquid electrolyte, and instead make use of an alternating stack of thin plastic films that are coated with conductive dielectric material. The thin plastic films are typically made of polyester or polypropylene.

When a voltage is applied to the two plates of the capacitor, an electric field is created between them. This electric field initiates electric charges to flow through the dielectric material, creating an electric current that is stored in the capacitor. As the voltage across the plates continuously changes, the field and stored energy also changes accordingly.

Due to the alternating layer of material, film capacitors are able to achieve a very low equivalent series resistance (ESR), which makes them ideal for high-frequency applications like radio circuit design. Additionally, film capacitors also provide excellent insulation, low-temperature dependence, and a low self-inductance.

Conclusion

The QXP2G105JRP7FX is a Film Capacitor with a wide range of applications in audio, automotive, telecom, medical, instrumentation, fire/security, and control systems. It works on the principle of an alternating stack of thin plastic films that are coated with conductive dielectric material, and it provides excellent insulation, low-temperature dependence, and low self-inductance.

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