The specified component is a CAP CER 91PF 50V C0G/NP0 0201. It has a capacitance value of 91pF with a tolerance of ±5% and operates at a maximum voltage rating of 50V. This capacitor is classified as Ceramic, using the C0G (NP0) dielectric material in a 0201 case size which is equivalent to a metric size of 0603.