The CAP CER 4.1PF 50V C0G/NP0 0201 is a specific type of ceramic capacitor. It has a capacitance value of 4.1 picofarads (pF) with a tolerance of ±0.25 pF, and it operates at a voltage rating of 50 volts. This component measures 0201 in size, which corresponds to the metric measurement of 0603. The C0G/NP0 designation indicates that it is part of the COG (Class I Ceramic for general electronic applications) or NP0 (Temperature Compensating Class I Ceramic) group.