The CAP CER 91PF 150V C0G/NP0 1111 is a specific type of ceramic capacitor. It has a capacitance value of 91 picofarads with a tolerance of ±1 pF and operates at a maximum voltage of 150 volts. This component falls under the C0G or NP0 classification, which denotes its temperature stability characteristics. The dimensions are specified by the part number 1111, indicating a metric package size of 2828.