MAL213634152E3

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Aluminum Electrolytic Capacitors

MAL213634152E3 Application Field and Working Principle

Aluminum electrolytic capacitors are widely used in high-frequency power supply circuits, high-speed switching power supply circuits, motor drives, power rectifiers, UPS system, etc. The MAL213634152E3 capacitor has the characteristics of low failure rate, small volume, large capacity, high working voltage, and wide operating temperature range, which makes it suitable for various applications. Therefore, it is an ideal choice for power converting applications.

The working principle of aluminum electrolytic capacitor is based on an anode which is composed of aluminum foil with cylindrical shape. The surface of this aluminum foil is covered with a film of metal oxide such as manganese oxide or titanium dioxide. This layer of metal oxide acts as dielectric, whose impedance is less than the impedance of an equivalent thicknesses of paper or plastic. An electrolyte is placed between the two conducting plates in order to provide the necessary charge carriers in the capacitor. The electrons move through the electrolyte while the ions move through the oxide film, allowing for a net flow of charges. This leads to the accumulation of charge after some time, and the capacitor is charged.

The capacitance of the aluminum electrolytic capacitor is determined by the size of the aluminum foil and the thickness of the oxide film. As the electric field increases, the molecules in the oxide film will collide with each other, and eventually break down to form dielectric breakdown. This is also known as dielectric polarization, which is the capacitance generated by the aluminum electrolytic capacitors. As the voltage increases to a threshold value, dielectric breakdown will occur, which leads to the failure of the capacitor. Therefore, it is important to ensure that the capacitance of the capacitor is not too large, the working voltage should not exceed the rated voltage.

Mal213634152E3 aluminum electrolytic capacitors are designed for high performance applications, which require high temperature and low leakage current. The products are high voltage, high temperature, low impedance, high ripple current and long life. The main characteristics are as follows: rated voltage 500V, temperature range of -55℃~105℃, impedance is 23M, dissipation factor is 0.4mΩ, leakage current is 0.2μA, and ripple current is 4.4A.

Therefore, Mal213634152E3 aluminum electrolytic capacitors are widely used in switch power supply, high frequency power supply, motor driver, power rectification, UPS system and other applications. It is suitable for switched mode power supply (SMPS) applications, electronic ballast, inverter and charger. It can also be used in high frequency circuits, such as oscillator, pulse amplifier, filtering circuit, and as buffering element. In all applications, it is necessary to pay attention to the working temperature, rated voltage, ripple current and maximum working voltage of the capacitor.

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