The CAP CER 390PF 1KV X7R 1812 is a type of ceramic capacitor. It has a capacitance value of 390 pico Farads and a tolerance of ±5%. The capacitor also features high voltage rating of 1000 volts (1 kV) and follows the X7R dielectric classification. This specific model is manufactured in the 1812 package, which is also known as metric code 4532.