The KC-LINK 3640 18NF 1200VDC is a type of ceramic capacitor with specific characteristics. It has a capacitance value of 0.018 microfarads and operates within a ±5% tolerance at 1200 volts DC, making it suitable for applications requiring high voltage ratings up to 1.2 kilovolts. This C0G, or NP0, capacitor is designated as KC-LINK 3640 (9110 Metric).