A ceramic capacitor with the designation CAP CER 33PF 500V C0G/NP0 1812 has a capacitance of 33 pF and operates within a ±5% tolerance at a maximum voltage of 500 volts. It is classified as a C0G or NP0 type, which indicates that it possesses temperature-stable characteristics and low loss factor. The capacitor's metric designation 4532 corresponds to its physical dimensions, and the 1B rating signifies that it meets certain quality standards for ceramic capacitors.