The part number is 1206J0500122FFT. It's a CAP CER 1200PF 50V C0G/NP0 1206 capacitor with a capacitance of 1200 pF, tolerance of ±1 percent, and a voltage rating of 50 volts. This is a ceramic capacitor of type C0G or NP0 in the 1206 (3216 Metric) package size.