R463I322050M2K is a Kemet Niobium Oxide (NbO) capacitors. These capacitors are surface mount, termination style is cake/terminal, case size 2512 (6.3x6.3x1.6mm), capacitance is 0.50 µF, rated voltage is 630Volts, impedance is 13.4 Ohms (at 1 kHz) and tolerance is +25/-20%. These capacitors are designed for use in high voltage and high frequency switching power supplies, and snubber circuits. The NbO technology offers superior dielectric characteristics, including high dielectric strength and high dielectric constant, along with low voltage coefficient and superior capacitance stability over temperature, frequency and voltage.