A 0.12uF, 50V ceramic capacitor with a tolerance of ±5% and the designation X7R is used in electronic circuits. The metric size of this component is 1812, which corresponds to an 18 mils x 12 mils x 8 mils (457 mm x 305 mm x 203 mm) dimension in imperial measurements, or a 4.57mm x 3.05mm x 2.03mm dimension in metric units.