This is a specification for a ceramic capacitor with the following characteristics: CAP CER 12PF 50V C0G/NP0 0402 refers to its designation and type. It has a capacitance of 12 pF ±2, operates at a voltage of 50V, and features a ceramic material with characteristics of C0G and NP0. The capacitor is available in the 0402 (1005 Metric) package size.