Datasheet

Reflective Object Sensor
OPB608A, OPB608B, OPB608C, OPB608R, OPB608V
© TT electronics plc
Issue D 01/2017 Page 1
TT Electronics | Optek Technology, Inc.
1645 Wallace Drive, Ste. 130, Carrollton, TX USA 75006 |Ph: [phone]
www.electronics.com | sensors@electronics.com
General Note
TT Electronics reserves the right to make changes in product specicaon without
noce or liability. All informaon is subject to TT Electronics’ own data and is
considered accurate at me of going to print.
Descripon:
OPB608 reecve switches consist of an infrared eming device (LED or VCSEL) and a NPN silicon phototransistor mounted “side-
by-side” on a parallel axis in a black opaque plasc housing. All OPB608’s (except OPB608R) have an eming device and a
phototransistor that are encapsulated in a visible ltering epoxy. The phototransistor responds to radiaon from the emier only
when a reecve object passes within its eld of view. The phototransistor has enhanced low current roll-o to improve the
contrast rao and immunity to background irradiance. LED versions are designed for near-eld applicaons. The VCSEL version is
designed for longer distances.
OPB608A, OPB608B and OPB608C devices are designed for applicaons with reecve distances between 0.050” (1.270 mm) and
0.375” (9.525 mm). OPB608V is designed for applicaons with reecve distances between 0.050” (1.270 mm) and
1.200” (30.480 mm). All of these are designed for light paerns not visible to the human eye. By ulizing the night enhancement
funcon of a camera, the near infrared light paern can be seen. This allows a user to see the paern shining on the reecve
object.
OPB608R is designed for applicaons with reecve distances between 0.050” (1.270 mm) and 0.300” (7.620 mm). It is designed
for light paerns visible to the human eye. The eciency of this sensor is lower for opcal wavelengths in the visible range, thus
reducing the distance that can be used.
Reecve distances are dependent upon the drive current for the light eming device, the wavelength of the light source, and the
type of reecve material; therefore, each applicaon should be checked for the ability to meet each requirement.
Custom electrical, wire and cabling and connectors are available. Contact your local representave or OPTEK for more
informaon.
Applicaons:
 Non-contact reecve object sensor
 Assembly line automaon
 Machine automaon
 Machine safety
 End of travel sensor
 Door sensor
Features:
 Phototransistor output
 Unfocused for sensing diuse surface
 Low cost plasc housing
 Enhanced signal to noise rao
 Reduced ambient light sensivity
Ordering Informaon
Part
Number
LED Peak
Wavelength Sensor
Reecon Distance
Inch (mm)
Lead
Length
OPB608A
890 nm
Rbe Transistor
See Graph
on Page 4
0.18"
(Min)
OPB608B
OPB608C
OPB608R 650 nm
OPB608V 850 nm
Addional laser safety informaon can be found on
the Optek website. See applicaon #221.
Classicaon is not marked on the device due to space
limitaons. See package outline for centerline of
opcal radiance. Operang devices beyond maximum
rang may cause devices to exceed rated classicaon