The CAP CER 13PF 50V C0G/NP0 0402 is a type of ceramic capacitor. It has a capacitance value of 13 picofarads and can withstand voltages up to 50 volts. This component is specified as C0G, which is another name for NP0, indicating that it is a temperature-stable, low-loss ceramic material suitable for use in various applications including electronic circuits. The size designation '0402' corresponds to the metric measurement of 1005, signifying its compact dimensions, typically measuring 0.4mm x 0.2mm.