MAL205848472E3

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Aluminum Electrolytic Capacitors

An aluminum electrolytic capacitor is a type of capacitor that uses an aluminum oxide film as the dielectric medium. It is made up of a body composed of two aluminum foils wrapped around an ethanol-soaked paper spacer and contains an electrolyte solution. The capacitance of the capacitor increases with the area of each aluminum foil and the length of the spacer between them, due to the electric field created by the aluminum oxide film. By using a different electrolyte, the capacitance can be altered, making the aluminum electrolytic capacitor one of the most widely used types of capacitor.

MAL205848472E3 Application Field and Working Principle

MAL205848472E3 is an aluminum electrolytic capacitor. It is designed for applications that require a low-profile EIA package size, high volumetric efficiency and high capacitance. The capacitance range is from 1uF (µF) to 4700µF, with operating temperature up to 70 degrees Celsius. It can be used in a variety of applications such as motor drives, power supplies, consumer products and automotive applications.

The working principle of this type of capacitor is based on the formation of an electric double layer (EDL) at the oxide-electrolyte interface on the foil surface. This double layer consists of a positively charged layer of ions (called the Helmholtz layer) and a negatively charged layer of electrons (called the Diffusion layer). During the application of a voltage, the Helmholtz layer is driven away, creating an electric field. This electric field generates the capacitance of the component. The higher the applied voltage, the further the layer of electrons is pushed away from the oxide-electrolyte interface, increasing the capacitance. Therefore, the capacitance of an aluminum electrolytic capacitor is dependent on the applied voltage.

The MAL series offers a wide variety of features such as low specific contact resistance, low self-resonance, and high ripple current capability. The series also features a patented aluminum foil design, which maximizes the capacitance of the device. Other features include a high-temperature device construction and low impedance values. In addition, the device is EIA compliant and exhibits a high rate capacitance.

The MAL series is available in low ESR versions, with a wide range of capacitance that can be selected to meet specific design requirements. This device is also capable of handling transient spike currents without damage, making it ideal for high inrush applications. The low ESR design results in a highly efficient device with long life expectancy, making it ideal for applications that require long life and reliability.

Overall, the MAL205848472E3 aluminum electrolytic capacitor is a highly efficient, low-profile device with an excellent ripple current capability. It is suitable for a variety of applications, such as motor drives, power supplies, consumer products, and automotive applications. The wide range of capacitance, together with its low ESR design and long expected life, make the MAL205848472E3 a reliable device for high inrush applications.

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