Features of Nippon Chemi-Con Aluminium Electrolytic Capacitors:
- The aluminium electrolytic capacitor has a roll of anode foil, paper separator, cathode foil and electrode terminals (internal and external terminals) with the electrolyte impregnated, which is sealed in an aluminium can case with a sealing material.
- The terminal draw-out structure, sealing material and structure differ depending on the type of the capacitor.
- Aluminium, which is main material in an aluminum electrolytic capacitor, forms an oxide layer (Al2O3) on its surface when the aluminium is set as anode and charged with electricity in elec-trolyte.
- The aluminium foil with an oxide layer formed thereon, is capable of rectifying electric current in electrolyte. Such a metal is called a valve metal.