Slotted Optical Switches

Slotted optical switches (also called opto switches) are devices that provide status indications (on or off) when light beams are interrupted in various types of instruments, systems and equipment.

The switches contain phototransistors, which are illuminated by infrared light from the LEDs. The illumination causes the phototransistors to conduct. If objects are then placed into the slots between the transistors and the LEDs, the interruption of the light beams causes the transistors to switch off.

Optical slotted switches may also house rotating discs with holes around the rims. These holes spin within the light paths of the switches to create on and off pulses and direct the speed of the spinning discs.

What are slotted optical switches used for?

Slotted optical switches are used in assembly line production systems, machine automation and machine safety indicators.

The switches are standard in computer peripherals like printers, where the projection images get interrupted when they reach the end of their travel.

Types of slotted optical switches

Slotted optical switches are classified by their output mechanisms (buffers, inverters, interrupters), mounting types (through hole, panel, surface) and the number of pins located on the switches.


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Description Price Output Device Number of Channels Typical Rise Time Typical Fall Time Mounting Type Package Type Number of Pins Dimensions Height Length Maximum Operating Temperature Minimum Operating Temperature Slot Width Width
RS Stock No. 880-2006
Mfr. Part No.OPB830W11Z
BrandOptek
MYR23.48
Each
units
Transistor 1 - - Screw Mount - 4 23.75 x 6.35 x 10.54mm 10.54mm 23.75mm +80°C -40°C 3.18mm 6.35mm
RS Stock No. 170-0955
Mfr. Part No.OPB830W11Z
BrandOptek
MYR22.501
Each (In a Bag of 100)
units
Transistor 1 - - Screw Mount - 4 23.75 x 6.35 x 10.54mm 10.54mm 23.75mm +80°C -40°C 3.18mm 6.35mm
RS Stock No. 908-7132
Mfr. Part No.OPB810W51Z
BrandOptek
MYR18.10
Each
units
Transistor - - - Panel Mount Wire - 30.99 x 6.35 x 15.63mm 15.63mm 30.99mm +80°C -40°C 9.53mm 6.35mm
RS Stock No. 880-2037
Mfr. Part No.OPB990T51Z
BrandOptek
MYR22.76
Each
units
- 1 70ns 70ns Screw Mount - 5 24.63 x 6.35 x 10.8mm 10.8mm 24.63mm +70°C -40°C 3.18mm 6.35mm
RS Stock No. 170-0964
Mfr. Part No.OPB990T51Z
BrandOptek
MYR22.287
Each (In a Bag of 25)
units
- 1 70ns 70ns Screw Mount - 5 24.63 x 6.35 x 10.8mm 10.8mm 24.63mm +70°C -40°C 3.18mm 6.35mm
RS Stock No. 908-7236
Mfr. Part No.OPB973N51
BrandOptek
MYR13.36
Each
units
Transistor - 70ns 70ns Through Hole Pin 5 12.32 x 6.35 x 10.8mm 10.8mm 12.32mm +70°C -40°C 3.18mm 6.35mm
RS Stock No. 908-7144
Mfr. Part No.OPB815WZ
BrandOptek
MYR22.46
Each
units
Transistor - - - Free Hanging Wire - 31.75 x 3.18 x 14.1mm 14.1mm 31.75mm +80°C -40°C 9.53mm 3.18mm
RS Stock No. 908-7201
Mfr. Part No.OPB940W51Z
BrandOptek
MYR23.05
Each
units
Transistor - 70ns 70ns Panel Mount Wire - 23.75 x 12.95 x 10.54mm 10.54mm 23.75mm +70°C -40°C 3.18mm 12.95mm
RS Stock No. 908-7160
Mfr. Part No.OPB840W55Z
BrandOptek
MYR18.48
Each
units
Transistor - - - Panel Mount Wire - 23.75 x 12.95 x 10.54mm 10.54mm 23.75mm +80°C -40°C 3.18mm 12.95mm
RS Stock No. 301-8442
Mfr. Part No.OPB620
BrandOptek
MYR6.34
Each
units
Phototransistor 1 - - Through Hole - 4 10.16 x 5.59 x 9.52mm 9.52mm 10.16mm +100°C -40°C 4.83mm 5.59mm
RS Stock No. 170-0960
Mfr. Part No.OPB866T55
BrandOptek
MYR10.934
Each (In a Bag of 100)
units
Transistor 1 - - Screw Mount - 4 24.61 x 6.35 x 10.8mm 10.8mm 24.61mm +85°C -40°C 3.3mm 6.35mm
RS Stock No. 880-2003
Mfr. Part No.OPB830W55Z
BrandOptek
MYR19.03
Each
units
Transistor 1 - - Screw Mount - 4 23.75 x 6.35 x 10.54mm 10.54mm 23.75mm +80°C -40°C 3.18mm 6.35mm
RS Stock No. 880-2021
Mfr. Part No.OPB866T55
BrandOptek
MYR11.405
Each (In a Pack of 2)
units
Transistor 1 - - Screw Mount - 4 24.61 x 6.35 x 10.8mm 10.8mm 24.61mm +85°C -40°C 3.3mm 6.35mm
RS Stock No. 194-4030
Mfr. Part No.OPB815WZ
BrandOptek
MYR19.02
Each
units
Phototransistor 1 - - Chassis Mount PCB Module - - - - +80°C -40°C 9.53mm 9.53mm
RS Stock No. 908-7157
Mfr. Part No.OPB821S5Z
BrandOptek
MYR21.14
Each
units
Transistor - - - Free Hanging Wire - 15.24 x 6.35 x 8.89mm 8.89mm 15.24mm +85°C -40°C 2.03mm 6.35mm
RS Stock No. 880-2015
Mfr. Part No.OPB840W11Z
BrandOptek
MYR24.67
Each
units
Transistor 1 - - Screw Mount - 4 23.75 x 6.35 x 10.54mm 10.54mm 23.75mm +80°C -40°C 3.18mm 6.35mm
RS Stock No. 908-7176
Mfr. Part No.OPB856Z
BrandOptek
MYR132.47
Each
units
Transistor - - - Panel Mount Wire - 17.27 (Dia.) x 19.3 Hmm 19.3mm - +85°C -40°C - -
RS Stock No. 173-0303
Mfr. Part No.OPB917BZ
BrandOptek
MYR23.32
Each (In a Box of 100)
units
Buffer, Open-Collector with 10K Pull-Up Resistor 1 50ns 50ns Through Hole - 5 30.73 x 6.35 x 25.65mm 25.65mm 30.73mm +85°C -40°C 5.08mm 6.35mm
RS Stock No. 880-2031
Mfr. Part No.OPB992P51Z
BrandOptek
MYR24.69
Each
units
- 1 70ns 70ns Screw Mount - 5 18.47 x 6.35 x 10.8mm 10.8mm 18.47mm +70°C -40°C 3.18mm 6.35mm
RS Stock No. 908-7214
Mfr. Part No.OPB942W55Z
BrandOptek
MYR21.73
Each
units
Transistor - 70ns 70ns Panel Mount Wire - 23.75 x 12.95 x 10.54mm 10.54mm 23.75mm +70°C -40°C 3.18mm 12.95mm