Fairchild Semiconductor QSD722 - PLASTIC SILICON INFRARED PHOTOTRANSISTOR PLASTIC SILICON INFRARED PHOTOTRANSISTOR QSD722 PACKAGE DIMENSIONS 0.190 (4.83) 0.178 (4.52) QSD723 QSD724 45° REFERENCE SURFACE 0.235 (5.97) 0.21 (7 views)