B32653A3684J289

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Film Capacitors

Film capacitors are widely used in various electronic devices, providing electrical insulation, within a properly constructed electrical circuit. Film capacitors are created by depositing a thin film of a conductive material onto a flat surface. This conductive material is typically metal foil, with a metalized dielectric or non-metallic film, and it serves to create an electric current that is similar to a battery. The capacitance of film capacitors is greater than that of the flat plate or capacitor, and they are also smaller in size, making it much easier to fit the capacitor within an electronic circuit.

The B32653A3684J289 is a film capacitor with a range of capacitance values from 0.1µF to 4.7µF, manufactured by the TDK Corporation. These capacitors are used for a variety of applications including decoupling, bypassing and filtering in communications and consumer electronics.

Application Field

The B32653A3684J289 film capacitor is most commonly used for power supplies, audio, video, and signal line bypassing. As a bypass capacitor, it is capable of limiting high-frequency noise on the output of an audio or video amplifier while providing a low-frequency path for signal bypassing. These capacitors can be used across a variety of different power supplies, ensuring good high-frequency decoupling, and also providing frequency response filtering. By decoupling, high-frequency noise can be eliminated from the output signal.

These capacitors are also often used for signal line pulse-bypassing applications, such as controlling logic switching peaks in oscillators and other pulse-bypass capacitors. In this application, the capacitors act as a low-impedance, high-frequency connection between the power supply signal line and the pulse-bypass circuit, preventing any spikes from affecting the operation of the circuit.

Working Principle

When an electric current runs through a film capacitor, the conductive material that is deposited on the flat surface acts as a barrier, preventing direct connection between the plates. When the plates are charged, the barrier formed by the conductive material prevents electric current from directly passing through. This creates an electric charge between the plates and a capacitive effect known as capacitance.

Film capacitors also have the ability to “store” energy, allowing them to be used as a voltage regulator. By using the capacitance generated by the capacitor to limit the flow of electricity, the voltage of the circuit is regulated, preventing voltage spikes and dips. This is especially important in applications like power supplies and audio/video amplifiers, where constant voltage is needed.

Conclusion

The B32653A3684J289 is a film capacitor from TDK Corporation that is used for power supply filtering, audio/video bypassing and signal line bypassing. By utilizing the properties of capacitance, the capacitor can absorb and limit high-frequency noise, while also providing a low-frequency path for signal bypassing. Due to its use in a variety of different applications, coupled with its small size and excellent frequency response, the B32653A3684J289 is an excellent choice for film capacitor applications.

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