ALS40A104KF025

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Aluminum electrolytic capacitors are electrochemical components that are used to store an electric charge, providing a reservoir of energy which can be quickly accessed when necessary. The ALS40A104KF025 is a type of aluminum electrolytic capacitor, used in a wide range of applications due to its combination of small size, high capacitance, and high voltage rating, making it ideal for many high power applications such as voltage conversion, filtering, and energy storage.

The ALS40A104KF025 is a radial leaded aluminum electrolytic capacitor, available in a range of capacitance values from 5μF to 1000μF. The rated voltage of the capacitor is 10V to 50V, and its maximum ripple current is 24.6mA. This makes it suitable for most high power applications which require high charge storage, and power conversion.

Application Field

The ALS40A104KF025 is used in a wide range of applications, due to its high capacitance and high voltage rating, making it suitable for many high power applications such as voltage conversion, filtering, and energy storage. Applications include electronic circuits for noise and ripple suppression, DC-DC converters, SMPS, battery-charging power supplies, computers and peripherals, telecommunications, and instrumentation. The capacitor can also be used in automotive and other light-duty applications.

Working Principle

The Alger SOMMETALS40A104KF025 aluminum electrolytic capacitor is composed of an anode formed of an aluminum foil covered with an electrolytic oxide layer, a cathode formed of a metal plate, and a separator of porous rubber or film between the plates, held together with a sealer strip. This stack is then rolled into a can, with the anode connected to the positive terminal, and the cathode connected to the negative terminal. This type of capacitor utilizes the principle of electrolytic action, which is a special chemical process by which electric charged ions are discharged from and return through the capacitance between the aluminum foil and the electrolyte.

The capacitor works on the principle of maintaining a balance between electric charge and electric field. When voltage is applied across its terminals, electric charges from one terminal move towards the other, increasing the potential difference between them. This potential difference creates an electric field between the terminals which opposes the incoming charge. When this opposing electric field is equal to the applied voltage across the capacitor, the charges stop moving and the capacitor is said to be in equilibrium.

In an aluminum electrolytic capacitor, electric current is supplied by the electrolyte passing through the separator membrane and the aluminum foil. Due to the two terminations, the capacitance of the capacitor is determined by the area of the aluminum foil coated with the electrolyte and the distance between the separator and the electrodes. This is determined when the capacitor is constructed and cannot be changed afterward.

The ALS40A104KF025 is designed to operate in temperatures ranging from -40°C to +105°C, providing long life and reliable operation. The capacitor also has a very low leakage current and high capacitance, making it an ideal choice for high power applications.

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