LuckyLight KD1-501CRB-08C30 is a 0.50-inch (12.70 mm) single-digit red Common Cathode 7-Segment LED Display designed for through-hole PCB and socket mounting. This LED Numeric Display features a black surface with white diffused segments and a 630 nm dominant wavelength for clear numeric indication. It supports 3–10 mA operating current per segment, allowing designers to select the drive current according to required brightness and power consumption, with typical average luminous intensity of 11.0 mcd at 5 mA and 22.0 mcd at 10 mA. Its 2.54 mm pin pitch and 15.24 mm row spacing support practical PCB integration for industrial instrumentation, control panels, test equipment and automation systems.