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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are one of the most commonly used types of capacitors today due to their high capacitance, low cost and wide availability. They are widely used in many electronic products, from portable consumer electronics to industrial and automotive applications. The UCX1H821MNQ1MS is a typical type of aluminum electrolytic capacitors.

Application Field of UCX1H821MNQ1MS

The UCX1H821MNQ1MS aluminum electrolytic capacitor is a radial product with an operability of 85 degrees Celsius and a lifetime of 6000 hours. It has a maximum operating voltage of 450V DC and a frequency of up to 100KHz. It has a capacitance of 820uF and a tolerance of 20%. It is mainly used for filtering, decoupling and buffering of high frequency signals and can also be used for industrial rectifier smoothing and other applications.

Working Principle of UCX1H821MNQ1MS

Aluminum electrolytic capacitors consist of two conductive electrodes, an electrolyte and an aluminum foil rolled together. The electrolyte is an organic solvent with an electrolyte salt dissolved in it. The aluminum electrodes are formed by anodizing two aluminum foils and a dielectric formed between the two layers of aluminum oxide film. When a voltage is applied across the terminals of the capacitor, a current flows through the electrolyte, causing electrons to be transferred between the electrodes. This process of electron transfer creates an electric field across the dielectric which stores electrical energy.

When a voltage is applied to the capacitor, the positive ions in the electrolyte are attracted to the negative terminals of the capacitor and the negative ions in the electrolyte are attracted to the positive terminals. This charge transfer process creates an electric field across the dielectric which causes the electrons to move and creates an electrical charge stored at the terminals of the capacitor.

When the capacitor is discharged, the electric field across the dielectric collapses and the charge stored at the terminals of the capacitor is discharged. The electric field is then re-established and the capacitor can be recharged and used again. This process is repeated during the charging and discharging cycles of the capacitor.

Conclusion

The UCX1H821MNQ1MS aluminum electrolytic capacitor is a popular type of capacitor due to its high capacitance, low cost and wide availability. It is mainly used in high frequency applications such as filtering, decoupling and buffering, and is also suitable for rectifier smoothing and other applications. The working principle of aluminum electrolytic capacitors is based on the charge transfer process between the electrolyte and the aluminum electrodes, which creates an electric field across the dielectric and stores electrical energy.

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