The CAP CER 0.5PF 50V C0G/NP0 0201 is a ceramic capacitor with a capacitance of 0.5 picoFarads and a voltage rating of 50 volts. It has a tolerance of ±0.25 pF and is available in the 0201 (0603 metric) size, making it suitable for various electronic applications that require precise and reliable capacitance values within a small footprint.