LNX2J392MSEJBB

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are one of the most commonly used capacitor types. It is widely used in the electronic industry for its wide array of application areas. The product code LNX2J392MSEJBB represents an aluminum electrolytic capacitor with 2 wound layers designed for high temperature operation. The aluminum electrolytic capacitors are characterized by their excellent high-frequency performance, large capacitance to volume ratio, and fast charge/discharge rate.

Application Field

Aluminum electrolytic capacitors are used in most electronic systems, including power supplies, converters, inverters, motor drives, noise control, television and audio systems, automotive electronics, and communications equipment. The most common application is the use of these capacitors as energy reservoir devices in power supplies. The LNX2J392MSEJBB capacitor is specifically designed for high temperature operation and is often used in environments where the temperature frequently exceeds 85°C.

Working Principle

The aluminum electrolytic capacitors use a very thin layer of oxide on aluminum as the dielectric. This oxide layer is formed by a chemical reaction between the aluminum and water or other electrolytes, creating a strong electrochemical bond between the two layers. This oxide layer serves as the electrical insulator and allows the capacitor to function properly in high temperatures. Due to the fragile nature of the oxide layer, it needs to be carefully protected from overvoltage, high frequencies, current overloading, and other environmental influences.

The components of the LNX2J392MSEJBB capacitor are an aluminum electrode, a cathode layer made of carbon or copper and an electrolyte. The electrodes contain two layers of aluminum foil each wound with another layer of separator paper. This allows a combination of two capacitors in one structure. The size of the aluminum foil layers determines the capacitance value of the component. The cathode layer helps to ensure the stable operation of the capacitors and a good electrical connection between the two foil layers.

The aluminum electrolytic capacitors operate under the principle of Faraday’s Law of Electromagnetic Induction. When a voltage is applied between the electrode plates, current in the form of ions flow through the electrolyte from one plate to another. This current causes an electrochemical reaction between the solvent and the aluminum electrodes which creates the electrostatic field. This field causes a capacitance effect between the two aluminum plates, and the current flows back and forth between them. The current flowing between the two plates creates a voltage drop across the device.

The LNX2J392MSEJBB capacitor is specifically designed for use in high temperature environments. Its components are manufactured in a way that allows the maximum possible temperature range during operation. The electrolyte and cathode layers are put together to minimize the effects of thermal expansion, and the aluminum foil layers are designed to handle that expansion without affecting the performance of the device. This also helps prolong the life of the component even at higher temperatures.

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