The CAP CER 680PF 200V C0G/NP0 1812 is a type of ceramic capacitor with the following specifications: capacitance value of 680 picofarads, ±2% tolerance, and a maximum working voltage of 200 volts. It is classified as a C0G (NP0) capacitor, which means it has a stable temperature characteristic and low loss factor. The 1812 designation refers to its metric size, equivalent to an 0805 or 2012 in imperial measurements.