The CAP CER 56PF 500V C0G/NP0 1812 is a 56 picofarad ceramic capacitor with a voltage rating of 500 volts. It has a tolerance of ±5% and belongs to the C0G/NP0 dielectric class, which is a type of ceramic material used in capacitors. This component is designed for use in various electronic applications where a high capacitance value and reliability are required. The 1812 or 4532 metric package size indicates its dimensions, with 18 millimeters being the diameter and 12 millimeters being the length.