A ceramic capacitor with part number CAP CER 270PF 1.5KV X7R 1812 has a capacitance of 270 picoFarads and a voltage rating of 1500 volts (1.5 kilovolts). It is classified as an X7R material, which indicates its temperature coefficient and stability characteristics in various environments. The metric designation for this capacitor's size is 4532.