A ceramic capacitor with the part number CAP CER 12PF 500V C0G/NP0 1812 has a capacitance of 12 picofarads and is rated for ±5% tolerance. It operates at a maximum voltage of 500 volts and has a metric size designation of 4532, equivalent to the 1812 (EIA 6032) package size in imperial units. This capacitor is classified as C0G or NP0 type, which indicates its temperature stability characteristics.