Kingbright l 7104 series 3mm infrared leds kingbright l 7104sf7bt this 850nm ir led comes in a t 1 standard 3mm through hole package mechanically and spectrally matched to the phototransistor 55 9203 kingbright l 7104sf7bt 3mm infrared led 850nm 14v 20ma 30mwsr blue trans 34