A capacitor with the designation of CAP CER 18PF 250V C0G/NP0 0603 is specified to have a capacitance value of 18 picofarads ±5 percent and can withstand a voltage of up to 250 volts. It has a metric size of 1608 and utilizes ceramic material with a temperature coefficient of zero, denoted as C0G or NP0.