A ceramic capacitor with the designation CAP CER 820PF 25V C0G/NP0 0603 has a capacitance value of 820 pico Farads and can withstand voltages up to 25 volts. It is part of the C0G or NP0 dielectric class, which offers stable characteristics over temperature variations. The component's dimensions are specified in metric units as 1608, corresponding to an 0603 size in imperial measurements.