25SGV100M6.3X8

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Aluminum electrolytic capacitors (also known as electrolytic capacitors, electrocaps, ACs, AL-CAPs and CE) are electronic components used for storing energy in an electric field, which are found in many types of electronic circuits. They are capacitors with one aluminum foil electrode and an electrolytic foil, with an insulating material and a conducting outer foil. The electric field between the plates stores energy in the form of electrical potential.

The 25SGV100M6.3X8 is a cylindrical aluminum electrolytic capacitor, and has a voltage rating of 100 VDC. It features an impressive capacitance of 10μF, rated at a temperature of 105°C. It is constructed with an encapsulated aluminum case, consisting of an internal pocket for holding an anode and a cathode. The construction is hermetically sealed in an epoxy resin to ensure high reliability and long-term service life.

The most common application field of the 25SGV100M6.3X8 capacitor is for the high-frequency filtering and energy storage. It is used in the power supplies of computers and office equipment, to control the flow of direct current (DC) power or voltage, and to store energy. It can also be used for the smoothing of the power supply to eliminate transients, or for replacing the conventional inductor or resistor in high-frequency signals, due to its higher capacitance compared to bulky ceramic or tantalum capacitors. Other applications include power factor correction (PFC) circuits, back-lighting applications, communication equipment such as switches, and low-speed DC-DC converters.

The working principle of aluminum electrolytic capacitors is based on Faraday’s Law, stating that when a conductor is immersed in an electrical field, an electric charge is induced on the conductor’s surface. Many layers of aluminum foil are arranged in the capacitor to form an electric stack. Each layer is separated by an oxide film, but in order for the capacitor to be charged, two metal plates, a conductor and an anode must be connected to the capacitor.

The anode is connected through an electrolyte, which is a liquid or gel-like material which acts as a conductor, and when current is applied, the electrolyte ionizes. Ionized molecules form a thin layer on the anode, which acts as a dielectric causing a non-conductive layer which stores the electrical energy. When voltage is applied across the capacitor, the positive ions of the electrolyte are attracted to the negative terminal of the capacitor and discharge, the negative ions to the positive terminal of the capacitor.

The energy stored in the capacitor is released to the electric circuit when the capacitor is disconnected from the power supply. This charge is then used within the circuit for various applications. It should be noted that aluminum electrolytic capacitors are not suited for use in high-frequency circuits, since their leakage current tends to be high and their efficacy decreases as the frequency of the current increases.

In conclusion, the 25SGV100M6.3X8 aluminum electrolytic capacitor is widely used for high-frequency filtering and energy storage applications in computers, office equipment, communication systems, and various other electronic circuits. It functions based on Faraday’s Law and is an effective solution for replacing bulky capacitors and inductors in high-frequency signal circuits.

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