MAL212365331

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Aluminum Electrolytic Capacitors

The application field and working principle of aluminum electrolytic capacitors, also known as electrolytic capacitors, is an important component in the electrical and electronic industry. It is mainly used as signal coupling, signal filtering, power supply smoothing, energy storage and charge and discharge. Ground bypass capacitor, etc., and widely used in electrical and electronic products.

The aluminum electrolytic capacitor is composed of an anode aluminum foil, a paper or ceramic sheet as a separator, and a wound or etched electrolyte-soaked capacitor paper as a whole. Inside, they are connected in series by electrolytic pastes between aluminum foils, and a wound paper-band-aluminum shell capacitor is formed. After baking, it becomes a solid capacitor.

When used in circuit application, the aluminum electrolytic capacitors is connected with the certain voltage of power supply, and the positive pole of the power supply is connected to the anode aluminum foil of the capacitor, while the negative pole of the power supply is connected to the shell of the capacitor. The presence of the circuit power supply voltage causes an electric field to form along the surface of the aluminum foil. The surface of the aluminum foil within the electric field will start to form a thin electric double layer, which will cause the opposite polarity of the two poles of the capacitor to form. Its capacitance is constituted by the surface area of aluminum foils, the distance from the electrodes to the separator and the material of the electrolyte and separator.

In practical applications, aluminum electrolytic capacitors show excellent performance in terms of capacitance, with different specifications and electroplated aluminum capacitors available in the range of 0.1uF to 470,000uF. Its rated voltage for class B capacitors is from 25V to 1000V, for class C from 200V to 450V, and for class D from 450V to 1000V.

In addition to the excellent performance in capacitance, aluminum electrolytic capacitors also show certain advantages in terms of size, cost and other aspects. Generally, if the capacitance of it is large enough, its volume can be quite small, and because of the larger capacitance coefficient of the aluminum electrolytic capacitors than other families of capacitors, its cost is lower than other families of equivalent capacitance capacitors.

However, there are also some limitations when it comes to aluminum electrolytic capacitors. Compared with other families of capacitors, the higher temperature characteristics cannot match, which means its temperature range is limited and its use temperature is within 10℃~105℃. But modern aluminum electrolytic capacitors have varieties of specifications, wide application range and higher temperature characteristics.

In sum, aluminum electrolytic capacitors are widely applied in a variety of electronic circuit applications and are an indispensable component for the stable operation of electronic equipment.

The specific data is subject to PDF, and the above content is for reference