Vishay 021 series standard miniature aluminium axial electrolytic capacitors 20 vishay 2222 021 29221 a 220microf 100v polarised aluminium electrolytic capacitor that has axial leads in a cylindrical case insulated with a blue sleeve suitable for general purpose applications for industrial automotive audiovideo useage as coupling decoupling smoothing filtering and buffering the small size and low mass of this capacitor makes it especially useful for portable and mobile equipment