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Aluminum Electrolytic Capacitors

An aluminum electrolytic capacitor is an electrical component composed of aluminum foil and plates made from electrolytic paper, with an electrolyte solution such as a diluted sulfuric acid. This component is used in electronic circuit applications. It provides high capacitance for electrical current, or capacitance for high voltage applications.

LLG2G821MELC40 application field and working principle

The LLG2G821MELC40 is a type of aluminum electrolytic capacitor that is used in a variety of applications. It is especially suited for use in high-frequency circuits, low-impedance applications and low-corona noise devices. This component is capable of withstanding both high voltage and high frequency without compromising performance.

The component works by storing a charge on the electrolytic paper. When a current is passed through the electrolyte, it forces ions in the solution to react with the aluminum foil and plate layers, forming a capacitor. The capacitance value and other properties of the capacitor are determined by the geometry, size and quality of the metal layers as well as the amount and type of electrolyte used.

The LLG2G821MELC40 stands out from other aluminum electrolytics due to its dielectric losses. By using a combination of metalized paper and electrolyte the internal resistance across the component is reduced while at the same time increasing the capacitance value. The capacitance value has been measured to be as high as 821 μF, which is sufficient for most high-frequency and high-capacity applications. The maximum working voltage is also quite impressive, ranging up to 500 VDC.

In addition to its performance capabilities, the LLG2G821MELC40 is designed with a temperature coefficient of ±30 ppm/°C. This coefficient ensures that the capacitance remains stable in a variety of environmental conditions. Moreover, the component incorporates a self-healing design that ensures that any internal short circuit caused by physical damage is repaired quickly, restoring the component to its original level of performance.

Overall, the LLG2G821MELC40 is a versatile and reliable aluminum electrolytic capacitor that is suitable for a wide range of applications. It offers high capacitance, low internal resistance, good temperature stability and can handle current within a wide voltage range.

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