MAL215976101E3

Aluminum Electrolytic Capacitors: MAL215976101E3 Application Field and Working Principle

An aluminum electrolytic capacitor is an electronic component consisting of two metal foils separated by a thin insulating layer, which is usually composed of paper or aluminum oxide. The metal foils conduct electrical current and are usually made of aluminum. During the manufacturing process, these two metal foils are electrolytically etched to form a textured surface, which is then coated with an electrolyte. The end result is an exceptionally high capacitance value, which is influenced by the area, thickness, and types of electrodes employed. Aluminum electrolytic capacitors are widely used in all kinds of electronic equipment, especially in power supply and main board.

MAL215976101E3 Application Field

MAL215976101E3 aluminum electrolytic capacitors, also referred to as low impedance aluminum electrolytic capacitors, are often used in the power supply. These capacitors are designed with thicker electrodes and lower equivalent series resistance (ESR) than standard aluminum electrolytic capacitors. The length of the leads can be trimmed according to the requirements, which make it perfect for use as a main power capacitor in many power devices. Additionally, it also finds application in a wide range of control-sensitive circuits, such as firing CPUs, LED backlight supplies, DC/DC converters, LCD TVs and other products.

Working Principle

The working principle of an aluminum electrolytic capacitor relies on the accumulation of electrical energy when the two oppositely charged metal plates, or electrodes, are separated by thin insulation layers. When a direct current is passed through an electrodes in an electrolytic capacitor, a layer of oxide, or insulator, is formed on the surface of the anode. This oxide layer functions as a dielectric, which stores electrical energy and builds potential energy between the two electrodes and indirectly affects the capacitance value.

The amount of energy that can be stored on an aluminum electrolytic capacitor depends on the area, thickness and type of electrode employed. In general, larger surface areas offer higher potential capacitance values and thicker insulation layers give higher breakdown voltages.

Conclusion

MAL215976101E3 aluminum electrolytic capacitors are commonly used in the power supply because of their high capacitance and low ESR ratings. Their high capacitance values and low ESR ratings enables these capacitors to store large amount of electrical energy without using precious board space. Furthermore, the thick electrodes and low ESR rating make them perfect for use in all kinds control-sensitive circuits, such as LED backlight supplies, DC/DC converters, LCD TVs and other products.