The specified component is a CAP CER 91PF 50V C0G/NP0 0201. It is a ceramic capacitor with the following characteristics: capacitance of 91 pF and tolerance of ±5%, rated voltage of 50 volts, and it follows the C0G/NP0 temperature characteristic and has a case size of 0201 (which corresponds to 0603 in metric units).