The CAP CER 12PF 500V C0G/NP0 1206 is a ceramic capacitor with specific characteristics. It has a capacitance value of 12 pF and operates at a voltage of ±5 within the range of 500 volts. This capacitor adheres to the C0G/NP0 specification and comes in the 1206 package, which corresponds to the metric size 3216.