Electrolytic capacitors are one of capacitors,metal foil is anode,the oxide film with anode to metal(alumina and tantalum pentoxide )is dielectric,the cathode is made of conducting material,electrolyte(liquid or solid)and other materials,the electrolytic capacitors are so called since electrolyte is main of cathode,besides,the anode and cathode can not be connected wrongly.
Electrolytic Capacitors List
EAA1 Standard Axial Aluminum Electrolytic Capacitor 40 85C
EAR1 CD110 Radial Aluminum Electrolytic Capacitors
EAR2 CD268 High Temperature Radial Aluminum Electrolytic Capacitors
EAR3 CD11W 5mm Height Standard 40 85C Aluminum Electrolytic Capacitor
EAR4 CD11X 7MM Radial Aluminum Electrolytic Capacitors
EAR5 CD71 Bi Polarized Radial Aluminum Electrolytic Capacitors
EAR6 CD286 Low Impedance 105C Aluminum Electrolytic Capacitors
EAR7 CD293 Snap In Aluminum Electrolytic Capacitors