The Blue 3mm LED is a standard through-hole indicator LED designed for electronic circuits, status indication, and embedded applications. It features a compact 3 mm diffused lens that provides soft and uniform blue illumination with wide visibility. Designed for stable low-power operation, the LED supports typical forward current ratings up to 20 mA and is suitable for breadboards, PCB assemblies, and educational electronics projects. Ideal for power indicators, signal visualization, DIY electronics, and prototyping applications.