The ceramic capacitor is a type of component with a capacitance value of 1.9 pF, tolerance of ±0.1 pF, and working voltage rating of 100 V. It has a designation code of CAP CER 1.9PF 100V NP0 0805, where "CER" denotes ceramic material, "NP0" indicates the temperature coefficient, and "0805" refers to its metric case size.