The CAP CER 2.2PF 50V C0G/NP0 0402 is a ceramic capacitor with a capacitance value of 2.2 picoFarads and a tolerance of ±0.1 pF, rated for use at 50 volts. It has a metric size designation of 0402 (1005) and falls under the C0G/NP0 classification, which indicates its temperature stability characteristics.