The CAP CER 1PF 50V C0G/NP0 0505 is a ceramic capacitor with a capacitance of 1 picofarad and a voltage rating of 50 volts. It has a tolerance of ±0.25 picofarads and is classified as a C0G or NP0 type, which are commonly used in electronic applications due to their stable and temperature-insensitive characteristics. The capacitor's dimensions are specified as metric size 1313.