Fairchild Semiconductor QED422 - PLASTIC INFRARED LIGHT EMITTING DIODE PLASTIC INFRARED LIGHT EMITTING DIODE QED422 PACKAGE DIMENSIONS 0.190 (4.83) 0.178 (4.52) QED423 REFERENCE SURFACE 0.220 (5.59) 0.030 (0.76) NOM 0 Rating: 1 ★ (2 votes)