L-7104F3BT is a T-1 (3 mm) through-hole infrared-emitting diode with a blue transparent lens. It emits IR (GaAs) with a 30° viewing angle and a radiant intensity at 20 mA of 5 mW/sr minimum and 10 mW/sr typical. Suitable for IR illumination, machine vision, surveillance, data transmission, and remote control. Manufactured by Kingbright.