Kingbright LEDs 3mm 5V and 12V – Kingbright L-7104ID-5V, This miniature 3mm high efficiency red LED from Kingbright is part of a superb, high quality range of components incorporating an inbuilt series resistor enabling the LED to be directly connected to 5V supply lines.Tough, reliable and built to last, this LED has been manufactured with Gallium Arsenide Phosphide. Kingbright L-7104ID-5V 3mm 5V High Efficiency Red LED 20mcd