The CAP CER 3900PF 63V X7R 1210 is a type of ceramic capacitor with specific characteristics. It has a capacitance value of 3900 pF, a tolerance of ±10%, and can withstand voltages up to 63V. The X7R designation indicates it belongs to the X7R dielectric class, which is suitable for applications requiring stability across temperature variations. Its metric size is 1210, equivalent to 3225 in imperial measurements.