LNT2G221MSECBN

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Aluminum electrolytic capacitors are components used in electronic circuits, which convert electric energy into potential energy stored in the electric field. Commonly used capacitors are polarized, meaning they have two plates, one of which is negative and the other of which is positive. The LNT2G221MSECBN is an aluminum electrolytic capacitor, and the application field and working principle are as follows.

Application field

The LNT2G221MSECBN is a long-life polymer aluminum electrolytic capacitor, specifically designed for AC motor start, DC motor drive, solar inverter, and UPS applications due to its improved endurance, lower ESR, and excellent frequency characteristics. It has a wide temperature range and superior electrical characteristics even at high temperatures.

The capacitor is of the vertical, flat type and is available in four sizes. The constructed body of the capacitor is composed of a black base material, a liquid electrolyte, an aluminum foil anode, and a tinned-steel cathode. The capacitance value ranges from 3.3 to 10,000μF, with a voltage rating as high as 450 VDC.

Working Principle

The working principle of the LNT2G221MSECBN aluminum electrolytic capacitor is based on the buildup of charge between two electrodes placed in an electrolyte solution. When a DC voltage is applied to the electrodes, ions in the electrolyte move to the anode. This creates a surface charge that causes an electric field to form between the two electrodes. When the applied voltage exceeds a certain value, the electric field is strong enough to generate reverse current flow from the anode to the cathode, which creates an electric double-layer, or consequence, at the anode.

The electric double-layer serves as a barrier, preventing further charge flow between the electrodes. This effectively stores charge in the capacitor and establishes the capacitor’s capacitance, which is directly proportional to the voltage applied. The LNT2G221MSECBN aluminum electrolytic capacitor requires a certain voltage to break down the electric double-layer and enable the capacitor to release its stored energy.

The LNT2G221MSECBN is a high-tech aluminum electrolytic capacitor designed for AC motor start, DC motor drive, solar inverter, and UPS applications. Its wide temperature range and superior electrical characteristics make it an ideal solution for these applications. By understanding its application field and the working principles, engineers can easily make the best choice for any given system design.

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