The part number is CAP CER 22UF 4V X5R 0508, which corresponds to a ceramic capacitor with specific properties. This component has a capacitance of 22 microfarads and operates at 4 volts. It belongs to the X5R classification, indicating its characteristics in terms of temperature and voltage stability. The 0508 designation specifies the physical dimensions of this capacitor, with 1220 metric being another identifier for these specifications.