The CAP CER 150PF 500V X7R 1812 is a specific type of ceramic capacitor. It has a capacitance rating of 150 pF and tolerates voltages up to 500V. The part number includes the metric designation "4532", indicating its size in millimeters: 4.3mm x 3.2mm. This component falls under the X7R dielectric classification, which is suitable for applications requiring a high level of stability over temperature.