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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors, also known as electrolytic capacitors or electrochemical capacitors, are non-ideal capacitors with an anode made of a metal layer, a semiconductor oxide layer and a liquid or solid electrolyte as a cathode. They are widely used in electronic equipment for signal coupling and decoupling, tone control, filtering, frequency compensation and energy storage.

LKX2W121MESY45 Application Field and Working Principle

The LKX2W121MESY45 aluminum electrolytic capacitor is a radial lead-type capacitor whose anode is made of metal, metal oxide, and a liquid or solid electrolyte as a cathode. The electrolyte-soaked electrodes create a high voltage (over 2.5V) polarization that increases the capacitance of the component.

The LKX2W121MESY45 aluminum electrolytic capacitor is one of the most popular choices for applications requiring low ESL and high ripple current capacity. It is widely used in audio circuits, microprocessor circuits, switching power supplies, power factor correction circuits, and automotive electronics.

The working principle of an aluminum electrolytic capacitor is based on the Faraday principle, which states that any capacitor can store energy in an electric field. In an aluminum electrolytic capacitor, the electrolyte stores electric charges on the anode and cathode. As current flows through the device, the electric field between the anode and cathode creates an energy reservoir. The larger the electric field, the higher the capacitance and thus, the higher the energy storage.

The LKX2W121MESY45 aluminum electrolytic capacitor also has a high frequency and low equivalent series resistance (ESR) for current flowing through. The lower ESR reduces heat dissipation and helps to extend the life of the device. The capacitor also has a high ripple current capacity, which enables a higher charge and discharge frequency than traditional electrolytic capacitors.

The LKX2W121MESY45 aluminum electrolytic capacitor is a rugged component with a long service life. The capacitance values remain largely consistent over its lifetime, which makes it an ideal choice for applications with strict requirements for capacitance. The devices are also capable of withstanding up to 16000 hours of continuous operation at their rated voltage.

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