This is a CAP CER 3900PF 10V C0G/NP0 1206 type ceramic capacitor with specific characteristics: it has a capacitance of 3900 pF ±5 and operates at 10V. It adheres to the C0G/NP0 specifications, commonly referred to as "1B," and is housed in a 1206 package equivalent to 3216 metric dimensions.