The CAP CER 27PF 63V C0G/NP0 0505 is a specific type of ceramic capacitor. It has a capacitance value of 27 picofarads with a tolerance of ±5 percent and can withstand operating voltages of up to 63 volts. The device conforms to the C0G/NP0 specification, denoting its use in applications requiring stable capacitance values over temperature changes.