Film Capacitors

ECQ-E1104JF3 Application Field and Working Principle

Film capacitors are indispensable components in electronic circuits. We can say that it is the most commonly used capacitors in the circuit. Film capacitors, also known as polyester capacitors, use flexible polyethylene terephthalate (PET) film as a substrate material and rely on thin-film metallization to form both electrodes on either side of the dielectric. The ECQ-E1104JF3 is a popular film capacitor on the market and is known for its high reliability and temperature resistance. This article will explain the working principle and application field of ECQ-E1104JF3.

Working Principle

An ECQ-E1104JF3 capacitor is a parallel plate capacitor formed by two layers of PET films placed between a sheet of conductive metal or graphite film. The internal electrodes are metallic layers of zinc or aluminum that are evaporated or sputtered onto the face of the films. The external electrodes are usually made of tin-plated steel. When a voltage is applied across the outside electrodes, a negative charge accumulates on one side and a positive charge on the other. This creates an electric field within the capacitor, allowing the capacitor\'s dielectric to become polarized. This electric field enables the capacitor to store electric energy and discharge it in an electric circuit.

Application Field

Film capacitors are widely used in various electrical and electronic devices, including industrial, commercial, computer, instrumentation, medical, telecommunications, and mobile equipment applications. The ECQ-E1104JF3 is especially suitable for decoupling, bypass, and signal-filtering circuits. It is also used in power supplies, high-frequency circuits, waveform tracking circuits, digital transmission lines, and even automotive applications. In terms of temperature range, this capacitor can be used in applications with an operating temperature range of -55 to +125°C.

Due to their high insulation resistance, low temperature stability, and excellent heat resistance, film capacitors are popular for critical circuits that require linear frequency, as well as those subject to high inrush and temperature stresses. Since the ECQ-E1104JF3 features a wide capacitance range, high rated voltage, and high insulation resistance, it is suitable for many types of circuit applications.

Conclusion

In summary, the ECQ-E1104JF3 is a useful variant of film capacitor with high rated voltage, wide capacitance range, excellent heat and temperature resistance, and low leakage current. It is suitable for a wide range of applications, such as bypass and decoupling circuits, waveform tracking circuits, digital transmission lines, and even automotive applications. However, be sure to carefully research the required capacitance and voltage rating for the specific application before making a purchase.