185472J400RCA-F

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Film Capacitors

Film capacitors are electrical components that utilize thin, dielectric films to store electrical energy when an electrical current is passed through them. The most common type of film capacitors are polypropylene (PP), polystyrene (PS) and polyester (PE). They are often used in high voltage applications and circuits with higher frequency speculations, due to their excellent characteristics compared to other types of capacitors.

185472J400RCA-F: Application Field and Working Principle

185472J400RCA-F is a film capacitor in the "R type" offered by manufacturer Kemet. It has a temperature range of -40 to +105 degrees Celsius, and is available in the resistance range of 0.2 ohms to 10 megohms. This capacitor is mainly used in high voltage applications, frequency speculations, and resonator circuits.

The operating principle of the film capacitor is simple. When a voltage is applied across the two terminals, a charge is stored in the dielectric. This stored charge builds up until the electrical potential across the film is equal to the applied voltage. The electric field generated by the stored charge causes the dielectric to become polarized, and it is this polarization of the dielectric that allows a capacitor to store energy.

It is important to consider the dielectric constant of the film capacitor when selecting a capacitor for a particular application. The dielectric constant of the dielectric is dependent on the size of the molecules used to make the film. A higher dielectric constant indicates greater capacitance. A typical polypropylene film capacitor has a dielectric constant of approximately 3.3, while a polyester film capacitor has a dielectric constant of approximately 1.9.

In addition to its high voltage applications, the 185472J400RCA-F is also well suited for high frequency circuits, as there is minimal self-inductance and stray capacitance associated with it. This makes it suitable for use in resonator circuits, where a high frequency energy is required. The capacitor also provides excellent signal and pulse response, as well as high ripple current handling capabilities.

Overall, the 185472J400RCA-F is a high-quality film capacitor suitable for a wide variety of applications. Its high-voltage and frequency speculations, resonator circuits, excellent signal and pulse response, and high-ripple current handling capabilities make it an ideal choice for a variety of applications.

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