LGM2W821MELC45

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Aluminum electrolytic capacitors are an important member of the capacitor family. Common types include aluminum electrolytic capacitors with axial leads and aluminum electrolytic capacitors with radial leads, each of which has different application fields and working principles. Among them, the LGM2W821MELC45 is a series of radial lead aluminum electrolytic capacitors with a nominal capacitance of 2.2uF, a voltage rating of 25 V (35 VAC) and a temperature range of -40 to +105 degrees Celsius. It is commonly used for line bypass, filtering, timing, pulse, motor starting and other circuits.

The working principles of aluminum electrolytic capacitors operate on the laws of thermodynamics and electrochemistry. The electrodes within an aluminum electrolytic capacitor consist of an anode and a cathode, separated by an electrolyte-filled dielectric material. The main materials used are aluminum foil, a wetting and passivating oxide film on the surface of the aluminum foil, and a paper impregnated with an electrolyte (Conductive Polymer). When a voltage is applied between the two electrodes, a very thin oxide film forms over the anode. This oxide film acts as an insulator and at the same time reduces the area of the effective plate and increases the capacitance. In order for electric current to flow between the electrodes, electric fields are created to overcome the insulating properties of the oxide film. The exchange of electrons between the electrodes produces a capacitive current. This capacitive current is what allows the capacitor to store energy.

The LGM2W821MELC45 series aluminum electrolytic capacitors are typically used in high frequency circuits, such as in pulse circuits, motor starters, line bypass, and timing circuits in both commercial and military applications. They have low ESR, low leakage current, low impedance, and excellent high frequency characteristics. The aluminum electrolytic capacitors are also available in a wide range of types, such as radial lead, axial lead, snap-in, and screw terminals types, giving designers great flexibility in their designs.

The axial lead LGM2W821MELC45 series aluminum electrolytic capacitors are specifically designed for high frequency applications and are available with voltage rated up to 50 volts. The axial leads make it easy to mount and offer an arrangement that provides excellent electrical contact. These capacitors are typically used in high frequency inverter circuits, contactors, and pulse-transformers, and are able to provide the necessary capacitance while maintaining high reliability and excellent stability.

The radial lead aluminum electrolytic capacitors are ideal for applications such as line bypass, filtering, power supplies and motor starters, since they offer excellent electrical characteristics and high reliability. The LGM2W821MELC45 series aluminum electrolytic capacitors feature a small size and low profile. They have an electrolyte filled dielectric which helps to provide excellent high frequency characteristics and ESR stability. The radial lead capacitors are available with voltage ratings of up to 35 volts, offering excellent amperage and frequency performance.

Overall, the LG2M21W821MELC45 series aluminum electrolytic capacitors are widely used in various high frequency applications due to their excellent electrical characteristics, small size, and high reliability. They are available with both axial and radial lead types, and offer different voltage ratings, depending on the application. The excellent high frequency characteristics, low impedance, and low leakage current make them ideal for pulse, motor starter, and line bypass circuits.

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