LNT2D102MSEN

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An aluminum electrolytic capacitor is a components which uses an electrolyte to form an electric double layer on the anode plates of its sealing can and uses the surface of its aluminum foil as the capacitance of the capacitor. The aluminum electrolytic capacitor uses aluminum foil as the anode material of the electrolytic capacitor. The number of layers of oxide film gradually formed on the anode surface (anode oxide film) is used as the dielectric layer of the capacitor, and the saturated electrolyte is used as a conductor that guides the electric energy between the two electrodes.
As the myriad components of circuits and equipment, aluminum electrolytic capacitors have a wide range of applications in various electronic products. This article focuses on the application field and working principle of the model LNT2D102MSEN aluminum electrolytic capacitor.

1. Application Field

The LNT2D102MSEN aluminum electrolytic capacitor is widely used in energy-saving lamps, electronic ballasts, solar inverters, inverters, switching power supplies, LED dimmers, and various lines and medical products, etc. Its advantages are as follows:

• Low Equivalent Series Resistance (ESR), High Ripple Current & High Surge Voltage Capability.
• Wide operating temperature range from -40°C to 85°C.
• High accuracy of capacitance, excellent frequency characteristics.
• Reasonable price, and good moisture-proof, high reliability.
• High-frequency low-impedance performance

The LNT2D102MSEN can other components, like resistors, copper foils, and capacitors, which helps to stabilize the entire circuit. This series of aluminum electrolytic capacitor is particularly suitable for medical instruments, high-power lighting driver equipment, inverter power supply circuits, motherboards, UPS power supply, LED driver, etc.

2. Working Principle

The working principle of the LNT2D102MSEN aluminum electrolytic capacitor is based on the principle of electrochemical capacitance. The capacitor consists of two electrodes, the anode and cathode, both placed in an electrolyte solution. A potential difference is applied between the anode and cathode, causing electrons to flow from one electrode to the other. The anode is composed of an aluminum alloy and is covered with an oxide film (dielectric layer). The cathode is composed of a conductive material. When voltage is applied to the capacitor, positive ions migrate to the negative surface, while negative ions migrate to the positive surface, thus forming an electric double layer (EDL) near the metal surface.

The capacitance of the LNT2D102MSEN aluminum electrolytic capacitor is also related to the surface area of the anode and dielectric, the distance between the electrodes and the dielectric layer, and the permittivity of the dielectric. In particular, the stability of the capacitor itself is mainly related to the thinnest film, i.e. the thickness of the oxide film on the anode surface. The thickness of the oxide film is related to the electrolyte saturation and the voltage and temperature of the capacitor itself.

Therefore, in the application of aluminum electrolytic capacitors, all related parameters must be strictly controlled to ensure the stability and reliability of the product. With its excellent performance, the LNT2D102MSEN has become the first choice of many electronic equipment manufacturers.

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