Aluminum electrolytic capacitors are made of two aluminum foils and a paper soaked in electrolyte.
By Shruti Vispute, Industry Analyst What Is The Use of Aluminum electrolytic capacitors ? The electrolytic capacitor is used where high levels of capacitance are required, but to provide long reliable service it must be used correctly and within its specifications. !! Download FREE PDF Sample | Click Here !! Aluminum capacitors are polarized electrolytic capacitors whose anode electrode (+) is made of a pure aluminum foil with an etched surface. The aluminum forms a very thin insulating layer of aluminum oxide by anodization that acts as the dielectric of the capacitor. A non-solid electrolyte covers the rough surface of the oxide layer, serving in principle as the second electrode ( cathode ) (-) of the capacitor. A second aluminum foil called “cathode foil” contacts the electrolyte and serves as the electrical connection to the negative terminal of the capacitor. Top manufacturers including : Murata Manufacturing Co. Ltd., Cornell Dubilier, Kemet, Vishay
