A 0502 ceramic capacitor with a capacitance of 12 pF and a voltage rating of 50 V is identified as CAP CER 12PF 50V C0G/NP0 0603. This component has the metric designation of 1608 and falls within the specifications for a 0603 (C0G/NP0) type capacitor, indicating a tolerance range of ±5% at 25°C with a temperature coefficient of zero.