The CAP CER 3900PF 16V C0G/NP0 1210 is a specific type of ceramic capacitor. It has a capacitance value of 3900 pF and operates within a voltage range of 16V. The C0G/NP0 designation indicates that it belongs to the Class I, Fixed Value (C0G) category with a temperature coefficient of zero parts per million (NP0). This capacitor comes in a compact 1210 case size, also known as a 3225 metric package.