The KC-LINK 2220 18NF 650VDC C0G is a type of ceramic capacitor with specific characteristics. It has a capacitance value of 0.018 microfarads and can withstand a maximum voltage of 650 volts DC. The capacitor is made using the C0G material, also known as NP0, which provides a stable dielectric constant over a wide temperature range. It is available in a 2220 metric package size with a part number of 5750.