ECW-U1822JX5 Capacitors

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Film Capacitors

Film capacitors, also known as film dielectric capacitors, are made up of a plastic film as the dielectric material between conductors. Plastic film is relatively inexpensive, which is why most film capacitors are produced in large volumes and have a competitive price. Film capacitors can get small, with a good rate of size-to-performance, and have low leakage current. These components are often applied in a variety of consumer electronics, automotive, and industrial applications due to their competitive characteristics.

ECW-U1822JX5 Application Field and Working Principle

The ECW-U1822JX5 Film Capacitor is a metalized polyethylene terephthalate (PET) film capacitor that is typically applied for AC line filtering, high current snubber circuits, and lighting circuitry. It is constructed with a metal foil as the electrode, a PET as the dielectric, and is characterized by small size with large current capabilities. This model is rated AC 400V, with a tolerance of 10%, a rated temperature of 105°C, and a rated capacitance of 0.22uF respectively.

Film capacitors have a basic working principle. During operation, the electrodes of the film capacitor absorb electric current, which produces an electric field in the film dielectric. The electric field then polarizes the molecules in the plastic film, creating dipole moments. The electric field also induces an electric flux between the film electrodes; this electric flux produces an electric displacement current in the capacitor.

The magnitude of electric charge on the electrically charged capacitors depends on the capacitance of the capacitor and the voltage applied. When the applied voltage is greatest, the magnitude of charge stored on the capacitor is equal to the capacitance multiplied by the voltage applied. This effect is true for both AC and DC voltages.

In AC applications, the metalized dielectrics loop over the electrodes of the capacitor and because of this, the electrostatic field applied from the external AC electric source can be completely completed into the electric field across the capacitor, leading to high capacity for a relatively small capacitor.

The capacitor\'s type of application is based on its capacitance, voltage, and size of the capacitor. As mentioned earlier, the ECW-U1822JX5 capacitor is typically applied for AC line filtering, high current snubber circuits, and lighting circuitry.

In AC line filtering, the ECW-U1822JX5 capacitor can be used to filter out noises that are present within the line, frequency modulation, and other signals due to its capacitance, voltage, and size range. This can help reduce interference in audio circuits, video circuits, and other circuits.

The ECW-U1822JX5 can also be applied for snubber circuits in high current applications. A snubber circuit is used to protect the main power electronic device from overvoltage and overcurrent surges. Since the ECW-U1822JX5 has a capacitance of 0.22uF and is rated with a voltage 400V, the capacitor can be used in high current and high voltage applications.

Finally, the ECW-U1822JX5 can be applied for lighting circuitry. The capacitor can be used to control the voltage to the lamp is distributed efficiently by absorbing the overshoot of voltage and supplying enough current for the circuit to sustain without harming the main power device.

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