F17102221002

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Film Capacitors

Film capacitors, also known as polymer film capacitors, are usually made of Mylar (Polyester or PET) or polypropylene (PP). They are similar to electrolytic capacitors, but with a number of distinctive advantages.

Advantages of Film Capacitors

• Long life: are designed for a life span of 6,000 to 10,000 hours, far longer than electrolytic capacitors;
• High temperature withstanding: withstand temperatures up to 125°C or even higher;
• High reliability: film capacitors can maintain stability over time and withstood extensive testing with excellent performance;
• Small volume: film capacitors are much smaller in volume equally with other capacitors;
• Low leakage current: compared to electrolytic capacitors, film capacitors can maintain the lowest spontaneous electrolysis even after long-term use;
• Low ESR: film capacitors have extremely low Equivalent Series Resistance (ESR).

F17102221002 Application Field and Working Principle

F17102221002 film capacitors are widely used in the fields of power electronics, automotive electronics, audio systems and computer-related fields. As an important part of electronic systems, F17102221002 film capacitors play an important role in driving, controlling, filtering, restoring, and protecting the power supply.

The F17102221002 film capacitor utilizes the dielectric constant of a film dielectric to cause the same amount of charge on the two plates separated by a dielectric (insulator) to maintain a certain voltage. When the two metal plates are filled with opposite charges, an electric field is generated in the dielectric. In actual use, the metal plates of the capacitor absorb, store and release electric charge, and control the current in the circuit.

Conclusion

F17102221002 film capacitors are widely used in electronic systems due to their reliability, small volume, and long lifespan. The working principle of film capacitors is relatively simple and is based on the concept of electric field. It is clear that film capacitors are an important component of any electronic device.

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