The CAP CER 9PF 50V C0G/NP0 0603 is a small ceramic capacitor with a capacitance value of 9 picoFarads and a voltage rating of 50 volts. It comes in the metric size of 1608, which corresponds to the 0603 designation in imperial measurements. This specific type of capacitor is classified as C0G/NP0, indicating it has a stable temperature coefficient and low losses.