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Aluminum Electrolytic Capacitors - LLG2E681MELB25 application field and working principle

Aluminum electrolytic capacitors, also known as aluminum electrolytic capacitors, are the most widely used capacitors in electronics products. These capacitors are inserted between the electrical circuit wires, and are used to balance the current when there is an alternating current voltage. The selection of aluminum electrolytic capacitors depends on the amount of generated heat and the voltage being processed. The LLG2E681MELB25 is one type of aluminum electrolytic capacitor designed to operate at a wide range of voltage levels and low temperatures.

Application field

The LLG2E681MELB25 is mainly used in the fields of computer motherboards, other embedded product boards, audio amplifiers, medical equipment, household electrical appliances, and other electronic equipment requiring low temperature endurance and low ESR performance. It supports up to 6.8μF of capacitance at 160Vdc and 25℃.

Working Principle

Electrolytic capacitors are based on the principle of electrolysis. The need for capacitor sub-circuits (e.g., parallel plate circuits) is replaced by the fact that the positive electrode in an electrolytic capacitor acts as the anode of an electrolytic cell. The negative electrode is the cathode and a layer of oxide forms between them. This oxide layer acts as the dielectric and reduces the charge leakage. The oxide layer is very thin and acts as a capacitor\'s gap insulation.

The LLG2E681MELB25 is made of a special kind of electrolyte that provides good conducting properties and good mechanical strength. This capacitance is also equipped with a special designed internal structure that provides a large surface area for capacitive charge storage. The different dielectric materials of the capacitor are aluminum oxide-coated aluminum plates, which are soaked in or processed form electrolytic solution. This ensures a low Equivalent Series Resistance (ESR) at high temperature, as well as excellent ripple current and low noise characteristics.

Conclusion

Aluminum electrolytic capacitors, such as the LLG2E681MELB25, have many advantages. They are simpler to manufacture than other types of capacitors, they have a low Equivalent Series Resistance at high temperatures, and they are able to store large amounts of charge. Therefore, they are widely accepted for use in a variety of electronic applications that require low temperature endurance and durable operation.

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