The CAP CER 0.39UF 16V X7R 1812 is a ceramic capacitor with specific characteristics. It has a capacitance value of 0.39 microfarads, operates at a voltage rating of 16 volts, and conforms to the X7R temperature coefficient classification. The capacitor's dimensions are in metric measurements, identified as 4532, which equates to an 1812 size in the standard designation system for this type of component.