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 .3 12/06
Page 1 of 3
Slotted Optical Flag Switch
OPB850A, OPB850-1Z
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Features:
" Snap into PCBoard mounting
" Transistor output
" Mechanical switch replacement
" Four 18 (457 mm) 26 AWG, UL wires for electrical connections
" Choice of phototransistor or Rbe phototransistor output
Description:
Each OPB850A switch has a NPN phototransistor coupled with a 940 nm gallium arsenide infrared emitting diode
in a molded plastic housing. Each OPB850-1Z has a Rbe phototransistor coupled with an 880 nm gallium arsenide
infrared emitting diode in a molded plastic housing. An actuated lever arm flag interrupts the light beam, which
switches the transistor output between states that can readily drive logic gates.
These devices are designed to replace conventional mechanical limit switches where long life and reliability are
critical. The switches are designed to easily snap mount into a 0.036 inch (0.914 mm) 20 gage thick material with
a rectangular opening of 0.315 x 0.472 (8.0 mm x 12.0 mm).
Minor differences exist in the package between the OPB850A and OPB850-1Z (see drawings below). The cable
exits the package in different locations.
Custom electrical, wire and cabling and connectors are available. Contact your local representative or OPTEK for
more information.
Product Photo Here
RoHS
OPB850-1Z
2
4
3
1
Applications:
" Non-contact interruptive object sensing
" Assembly line automation
" Machine automation
" Equipment security
" Machine safety
Ordering Information
Part
Number
Description
OPB850-1Z
Slotted Optical Flag Switch
18 (457 mm) wires
OPB850A
Slotted Optical Flag Switch
18 (457 mm) wires
Wavelength
940 nm
880 nm
OPB850A
2
3
4
1
OPB850A, OPB850-1Z
Pin # / Color Description
1-Black     Emitter
2-Red     Anode
3-Brown    Collector
4-Orange    Cathode