380LQ821M180J022

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors, typically referred to as simply “electrolytcs”, are capacitors with a non-solid electrolyte, which is typically made from an organic solvent-based electrolyte or a conductive polymer. They are the most commonly used capacitors in electronic circuits. The model 380LQ821M180J022, in particular, is a standard type of electrolytic capacitor with common polarity.

Applications

The 380LQ821M180J022 is primarily used in high frequency circuits and amplifiers. It is also often used for timing and pulse applications where its high capacitance and low cost make it ideal. Additionally, these capacitors are used for energy storage and line filtering in radio communication systems, including television receivers and cellular base stations.

In AC circuits, these capacitors can be used to both store energy and to block the flow of current. They can also be used to adjust the phase of the AC signal, reducing power supply harmonics, attenuating inverter signals, and adjusting frequency-dependent voltage and current in high-frequency power converters.

Working Principle

The 380LQ821M180J022 capacitor operates on the principle of an electric double layer capacitor, also known as EDLC. This capacitor consists of two charged metallic surfaces that are separated by an extremely thin, electrically insulating layer. The insulating layer is formed by an electrolyte solution, which is usually an organic solvent like ethylene glycol.

The surface of the metallic plate closest to the electrolyte solution is covered in nanoparticles, called “titanium oxide nanotube arrays”. These nanotubes greatly increase the surface area of the plate, thereby increasing the capacitor\'s capacitance. In addition, the electric double layer structure provides for a high capacitance-to-volume ratio and a low leakage current compared to other capacitor types.

When voltage is applied across the capacitor\'s electrodes, electrons from the positive electrode move into the negative electrode, thus producing an electric field. This field generates a charging current, which accumulates charges on the nanotube array, conferring the desired Polarization of the capacitor. The accumulated charge in turn adds to the capacitance.

The most significant feature of electric double-layer capacitors is their high capacitance, which is typically 2-3 times higher than that of traditional electrolytic capacitors, and also their low equivalent series resistance (ESR), which minimizes power losses resulting from voltage drops across the capacitor.

Conclusion

The 380LQ821M180J022 aluminum electrolytic capacitor is a standard component in many electronic circuits. It is typically used in high frequency circuits and amplifiers, and for timing and pulse applications. Additionally, it can be used for energy storage and line filtering in radio communication systems, and for AC applications to both store energy and block current. Its high capacitance (2-3 times higher than standard electrolytic capacitors) and low ESR make it a desirable option in modern circuits.

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