LGUW6471MELC

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Aluminum Electrolytic Capacitors

An aluminum electrolytic capacitor, often abbreviated as AEC, is an electronic device that uses an electrolyte to store an electric charge in an electrically isolated environment. It is a type of capacitor that has a dielectric formed by an electrochemically oxidized aluminum layer, typically a double layer of aluminum oxide. As in all capacitors, this dielectric layer stores a charge when a voltage is applied between its plates.

LGUW6471MELC Application field and Working Principle

The LGUW6471MELC is a radial leaded aluminum electrolytic capacitor with 85°C rated temperature. It is a polarized capacitor that is used for both AC and DC applications.The LGUW6471MELC has a capacitance of 4.7–100 µF, a rated package size of 6.3×7.3 mm and a voltage rating of 10 V. It has a maximum ripple current of 0.25 A and a maximum ESR of 0.012 Ohm. The LGUW6471MELC is designed to be used in audio equipment, medical devices, home appliances, and external power supplies.

The working principle of the LGUW6471MELC is based on the electrical double layer formed by the electrolyte between two metal plates. The metal plates are insulated from each other, so that the electric field generated by the applied voltage has to pass through the electrolyte to reach the second metal plate. This activity generates a capacitance, which is strongly dependent on the electrolyte and the area of the plates. The electrolyte is composed of an organic solvent, such as ethylene glycol, dissolved in a solution of water and salts. It is important to note that the electrolyte of aluminum electrolytic capacitors is not a solid, but a colloidal suspension, which allows the ions to move freely.

The presence of an electrolyte also has an additional benefit. It allows the dielectric layer to self-heal when exposed to high electric fields. This means that the electric field is partially absorbed by the electrolyte and dissipated as heat, thus protecting the capacitor’s plates from damage. This phenomenon is called dielectric conductivity.

The LGUW6471MELC is a high-quality aluminum electrolytic capacitor that is designed to provide reliable performance and long service life. The electrolyte in the LGUW6471MELC has an increased life, thus making it suitable for demanding applications. The LGUW6471MELC can also be used for decoupling and for filtering.

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