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Film Capacitors: DPFF12S15J-F Application Field and Working Principle

A film capacitor, also known as a plastic film capacitor, is a type of capacitor which is made of simple plastic precursor films such as polypropylene, polyethylene terephthalate, polycarbonate and polystyrene. It is frequently used in electronic circuits due to its small size and low cost. This type of capacitor also features a non-polarized design that makes them useful for a variety of electronic applications.

Features and Benefits of Film Capacitors

Film capacitors provide a number of features and benefits, including:

• Low dielectric absorbtion
• Low ESL/ESR (equivalent series resistance and inductance) values
• High insulation resistance, high working voltage, and wide capacitance range
• Excellent temperature characteristics and long-term stability
• Able to cope with sudden overvoltage and seismic disturbances
• No audible noise or switching transients

DPFF12S15J-F is a type of film capacitors with the features above.

Application of Film Capacitors

Film capacitors can be used in many different applications, such as high-frequency circuit, audio-frequency circuit, signal isolation circuit, signal processing circuit, pulse circuit, filter circuit, power factor correction circuit, and AC filter circuit, etc. It is important to note that they are not suitable for AC working conditions or applications that require a long time for startup.

Working Principle of DPFF12S15J-F

The electrode plates of the DPFF12S15J-F film capacitor are composed of metal films such as aluminum or copper. The dielectric film between the metal plates is formed by impregnation with an organic medium. The permittivity of the dielectric is affected by the dielectric composition and the thickness of the film. The internal electrodes are coupled together and insulated from each other by the dielectric layers. A dielectric constant of 1.5 ensures high performance.

The capacitance value of the DPFF12S15J-F is mainly determined by the thickness of the dielectric layers. The capacitance of the film capacitors can be changed by adjusting the thickness of the metal and dielectric layers. This type of capacitor also features a long service life, and low temperature coefficient.

Conclusion

In conclusion, the DPFF12S15J-F is a type of film capacitor with many features and a wide range of applications. It can provide excellent performance and performance due to its low dielectric absorption and a dielectric constant of 1.5. Its capacitance can be changed by controlling the layers’ thickness, and it also has a long life time. Therefore, the DPFF12S15J-F is a great choice for many applications.

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