100MXC1200MEFC25X30

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Aluminum Electrolytic Capacitors

An aluminum electrolytic capacitor is an electronic component that uses an oxide film as a dielectric material. It has a large capacitance in a small volume, and is widely used in various electronic products, making it an indispensable component of electronic products.

100MXC1200MEFC25X30 Application Field and Working Principle

The 100MXC1200MEFC25X30 aluminum electrolytic capacitor is a kind of aluminum electrolytic capacitor. Its nominal capacitance is 100uf, working voltage is 450V, size is 25mm x 30mm, and the temperature range of use is -40°C to +105°C. It is widely used in communication systems, computer power supplies, audio and video systems, automotive electronics, household appliances, medical equipment, industrial instruments and other fields.

The working principle of an aluminum electrolytic capacitor is based on the principle that two objects with different equivalent electric potentials are separated by an insulating dielectric in between. Inside every aluminum electrolytic capacitor, there are two electrodes forming a so called electric double layer. The positive electrode is made of a highly porous aluminum foil consisting of an oxide layer. The negative electrode is also made of aluminum foil but it is not oxidized. Both electrodes are bathed in an electrolyte, which is generally an aqueous solution of alkaline salts. When a voltage is applied across the double layer, current will flow from the negative electrode to the positive electrode, and the positive electrode will start to conduct, effectively forming a conductive oxide dielectric layer between the two electrodes. This is how the capacitor store electrical energy.

Furthermore, in order to ensure the stable performance of aluminum electrolytic capacitors, it is necessary to use a relieved connection cap with combined axial and radial lead. This relieved connection cap is made with a combination of soft insulation and non-inert materials to provide both electrical insulation and mechanical stability to the capacitors in the associated circuit. It will also greatly reduce the possibility of an internal short circuit or contact impedance due to mechanical vibration.

In conclusion, the 100MXC1200MEFC25X30 aluminum electrolytic capacitor is a widely used type of electronic component, suitable for a variety of applications due to its small size and large capacitance. Its working principle is based on the double layers formed by two electrodes in contact with an electrolyte. It is usually enclosed by a relieved connection cap, which allows it to be mechanically stable and helps prevent any short circuit or contact impedance.

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