PACKAGE DIMENSIONS
0.195 (4.95)
PLASTIC SILICON INFRARED
PHOTOTRANSISTOR
QSD122 QSD123 QSD124
REFERENCE
SURFACE
0.305 (7.75)
0.800 (20.3)
MIN
EMITTER
0.500 (1.25)
0.040 (1.02)
NOM
COLLECTOR
0.100 (2.54) NOM
SCHEMATIC
COLLECTOR
NOTES:
0.020 (0.51)
SQ. (2X)
0.240 (6.10)
0.215 (5.45)
1. Dimensions for all drawings are in inches (mm).
2. Tolerance of ± .010 (.25) on all non-nominal dimensions
unless otherwise specified.
EMITTER
DESCRIPTION
The QSD122/123/124 is a phototransistor encapsulated in an infrared transparent, black T-1 3/4 package.
FEATURES
• NPN Silicon Phototransistor
• Package Type: T-1 3/4
• Notched Emitter: QED12X/QED22X/QED23X
• Narrow Reception Angle: 24°C
• Daylight Filter
• Package Material and Color: Black Epoxy
• High Sensitivity
2001 Fairchild Semiconductor Corporation
DS300361 7/20/01
1 OF 4
www.fairchildsemi.com