The CAP CER 3.9PF 250V C0G/NP0 1111 is a specific type of ceramic capacitor. It features a capacitance value of 3.9 picofarads and a tolerance range of ±0.25 picofarads. This component has a voltage rating of 250 volts and adheres to the C0G/NP0 specification, denoted by the code "1111". The metric size for this capacitor is 2828.