A CAP CER 3.9 PF 16V C0G/NP0 1206 is a type of ceramic capacitor with the following specifications: capacitance value of 3.9 pF and tolerance of ±0.5 pF, rated for a maximum voltage of 16V. It has a metric size designation of 3216 and is classified as C0G or NP0 grade (1B).