Fairchild Semiconductor QED522 - PLASTIC INFRARED LIGHT EMITTING DIODE PLASTIC INFRARED LIGHT EMITTING DIODE QED522 PACKAGE DIMENSIONS 0.190 (4.83) 0.178 (4.52) QED523 REFERENCE SURFACE 0.220 (5.59) 0.030 (0.76) NOM 0 (1 views)