OPTEK Technology Inc. 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747    FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A.1 7/09
Page 1 of 3
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Slotted Optical Switch
OPB847, OPB848
Features:
" Non-contact switching
" Apertured for high resolution
" Hermetically sealed components
Description:
The OPB847 and OPB848 consists of a gallium aluminum arsenide LED and a silicon phototransistor, which is
soldered into a printed PCBoard and mounted in a high-temperature plastic housing on opposite sides of a 0.100
inch (2.540 mm) wide slot. Both device types have a .025 (0.635mm) inch by .060 inch (1.524 mm) aperture in
front of the phototransistor for high resolution positioning sensing. Phototransistor switching takes place when an
opaque object passes through the slot.
Product Photo Here
Applications:
" Non-contact interruptive object sensing
" Assembly line automation
" Machine automation
" Equipment security
" Machine safety
RoHS
Part Number
LED Peak
Wavelength
Sensor
Slot Width /
Depth
Aperture
Emitter/Sensor
Lead Length /
Spacing
OPB847
890 nm Transistor
0.100" / 0.250 0.025" / 0.025"
OPB848
0.425" / 0.300"
Pin #   Description
1
Anode
2
Cathode
3
Emitter
4
Collector
1
2
4
3
DIMENSIONS ARE IN:
INCHES
[ MILLIMETERS]