Datasheet OPB822, OPB826 (TT Electronics)

Non-contact switching Single or double apertures for high resolution
OPB826
Choice of slot widths Choice of side-by-side or over/under dual channels Choice of electrical outputs
OPB822
Each
OPB822
and
OPB826
slotted switch consists of two infrared emitting diodes and two NPN silicon phototransistors mounted on opposite sides of a 0.090” (2.29 mm) wide slot
(OPB822)
or a 0.100” (2.54 mm) wide slot
(OPB826)
.
OPB822
uses an side-by-side mounting configuration, while
OPB826
uses an over/under mounting configuration.
OPB822S
has 0.01” by 0.04” (0.25 mm x 1.02 mm) apertures in front of both phototransistors while the
OPB822SD
has the aperture in front of both phototransistors and both emitters. The
OPB826S
has 0.04” by 0.04” (1.02 mm x 1.02 mm) apertures in front of both phototransistors while the
OPB826SD
has the aperture in front of both phototransistors and both emitters. Dual channels enable direction of travel sensing, with the low-cost plastic housing reduces possible interference from ambient light and provides protection from dust and dirt. Phototransistor switching occurs when an opaque object passes through the device slot. For information on encoder design, see Application Bulletin 203 at: Custom electrical, wire and cabling and connectors are available. Contact your local
LED Slot Aperture Lead
representative or OPTEK for more information.
Part Peak Width / Emitter/ Length / Number Wavelength Sensor Depth Sensor Spacing None / OPB822S
Encoders
Dual Dual 0.09" / 0.01" 0.35" /
Non-contact object sensing
935 nm Transistor 0.30” 0.01" / 0.30" OPB822SD
Assembly line automation
0.01"
Machine automation
OPB826S NA / 0.04"
Equipment security
Dual Dual 0.10" / 0.20" / 0.04" /
Machine safety
890 nm Transistor 0.42” 0.74" OPB826SD 0.04" RoHS