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Aluminum Electrolytic Capacitors

LGU2P471MELA Application Field and Working Principle

Aluminum electrolytic capacitors are widely used in many important electronics like TVs, computers and mobile phones. The LGU2P471MELA part is an aluminum electrolytic capacitor with two leads. It is suitable for a variety of applications related to transient filtering and energy storage, including communications equipment, consumer electronics, power supplies, LED drivers, and automotive electronics.

The principle of capacitor operation is based on the Faraday Law, which states that when a voltage difference is applied across a capacitor, charges will flow until the capacitor is fully charged. When the voltage is removed, the charges will remain stored in the capacitor until the voltage is reapplied. The capacitance of an aluminum electrolytic capacitor is the ratio of the charge stored on one plate to the potential difference between the two plates. The capacitance of the LGU2P471MELA is 47 μF (47x10^-6F).

In terms of its physical structure, the LGU2P471MELA is an example of a polarised capacitor. The positive and negative terminals of the capacitor must be connected correctly in order to ensure proper operation. The capacitor has two short leads and a large cylindrical package, with a solid top and cut sides. The body is filled with an electrolyte and consists of two aluminum foils separated by a paper spacer that is impregnated with an electrolyte.

The two aluminum foils are insulated from each other, and an anode is created on one of them by the sorption of polarized molecules during manufacturing. When a voltage is applied to the capacitor, the anode is polarized and electrons are attracted from the negative pole and into the anode, which creates a space charge. The opposite pole attracts electrons from the positive side and this creates a build-up of charge and a potential difference between the two poles. This potential difference is the capacitance of the capacitor.

In terms of its physical parameters, the LGU2P471MELA has a maximum rated voltage of 25V and a maximum ripple current of 2.85A. Its capacitance tolerance is ±20%, and its temperature range is -40°C to 85°C. It has a high stability and life expectancy, with a shelf life of 1,500 hours and a service life of 8,000 hours.

The LGU2P471MELA is a suitable capacitor for a variety of applications related to energy storage and transient filtering. Thanks to its robust construction, it has a high life expectancy and reliable performance even when exposed to harsh environmental conditions.

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