The CAP CER 390 PF 500V X7R 1206 PB is a type of ceramic capacitor that features specific characteristics. It has a capacitance rating of 390 picofarads with a tolerance of ±20%, and it can withstand a maximum voltage of 500 volts. This capacitor uses the X7R dielectric material and comes in a 1206 (3216 metric) case size.