The CAP CER 820PF 630V C0G/NP0 1812 is a type of ceramic capacitor. It has a capacitance value of 820 pF and can withstand a voltage of up to 630V. The C0G/NP0 designation indicates that it belongs to the C0G class, which are known for their stability and reliability. The capacitor's dimensions are specified as 1812, which is equivalent to the metric size 4532.