50pcs/lot CQY37N infrared emission tube wavelength 950nm small angle ±12° light-emitting diode 1.8MM ultra-small
https://www.vogueparade.com/shopping/EN/150412/1/1005003420822623/50pcslot-cqy37n-infrared-emission-tube-wavelength-950nm-small-angle-12-light-emitting-diode-18mm-ultra-small//