The CAP CER 12PF 1.5KV C0G/NP0 1812 is a ceramic capacitor with a capacitance value of 12 picofarads and a tolerance of ±20%. It has a maximum working voltage of 1500V (1.5kV) and is classified as a C0G or NP0 type, which indicates its stability over temperature and frequency. The capacitor has a metric size code of 4532, equivalent to the imperial size code 1812.