The part number is CAP CER 2.2UF 100V X5R 1206, which refers to a specific type of ceramic capacitor with the following characteristics: capacitance value of 2.2 microfarads, rated voltage of 100 volts, and a temperature coefficient class of X5R. The metric designation for this component is 1206 (which is equivalent to 3216 in other notation). It also has a tolerance of ±10% for its specified capacitance value.