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. 219-2527
Mfr. Part No.EE-SX4070
BrandOmron
MYR8.55
Each
units
Open Collector 1 - - Through Hole - 5 11 x 8 x 9.7mm 9.7mm 11mm +75°C -40°C 8mm 8mm
RS Stock No. 453-0836
Mfr. Part No.H21A3
BrandIsocom
MYR6.884
Each (In a Pack of 5)
units
Phototransistor 1 8µs 50µs Screw Mount - 4 25.7 x 6.6 x 11.1mm 11.1mm 25.7mm +85°C -25°C 3mm 6.6mm
RS Stock No. 219-2561
Mfr. Part No.EE-SG3
BrandOmron
MYR24.60
Each
units
Phototransistor 1 4000ns 4000ns Through Hole - 4 25.4 x 6.35 x 11.7mm 11.7mm 25.4mm +85°C -25°C 3.6mm 6.35mm
RS Stock No. 170-0955
Mfr. Part No.OPB830W11Z
BrandOptek
MYR30.625
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. 880-2006
Mfr. Part No.OPB830W11Z
BrandOptek
MYR27.22
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. 219-2533
Mfr. Part No.EE-SX1041
BrandOmron
MYR10.59
Each
units
Transistor 1 4000ns 4000ns Through Hole - 4 6 x 14.6 x 10.9mm 10.9mm 6mm +95°C -25°C 5mm 14.6mm
RS Stock No. 908-7132
Mfr. Part No.OPB810W51Z
BrandOptek
MYR16.46
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. 219-2511
Mfr. Part No.EE-SX1070
BrandOmron
MYR8.76
Each
units
Phototransistor 1 4000ns 4000ns Through Hole - 4 17.7 x 6 x 10.7mm 10.7mm 17.7mm +95°C -25°C 8mm 6mm
RS Stock No. 880-2037
Mfr. Part No.OPB990T51Z
BrandOptek
MYR30.65
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. 666-6530
Mfr. Part No.GP1S53J000F
BrandSharp
MYR4.574
Each (In a Pack of 5)
units
Phototransistor 1 3µs 4µs Through Hole - 4 13.7 x 5.2 x 10mm 10mm 13.7mm +85°C -25°C 5mm 5.2mm
RS Stock No. 908-7236
Mfr. Part No.OPB973N51
BrandOptek
MYR12.85
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. 170-0964
Mfr. Part No.OPB990T51Z
BrandOptek
MYR32.408
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. 880-2021
Mfr. Part No.OPB866T55
BrandOptek
MYR10.685
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. 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. 908-7160
Mfr. Part No.OPB840W55Z
BrandOptek
MYR16.77
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. 453-0842
Mfr. Part No.H21A6
BrandIsocom
MYR7.708
Each (In a Pack of 5)
units
Phototransistor 1 8µs 50µs Screw Mount - 4 25.7 x 6.6 x 11.1mm 11.1mm 25.7mm +85°C -25°C 3mm 6.6mm
RS Stock No. 124-6797
Mfr. Part No.RPI-441C1
BrandROHM
MYR1.851
Each (In a Pack of 15)
units
Phototransistor 1 10µs 10µs Through Hole - 4 8 x 4.2 x 5.2mm 5.2mm 8mm +85°C -25°C 4mm 4.2mm
RS Stock No. 788-4931
Mfr. Part No.EE-SX1046
BrandOmron
MYR13.25
Each (In a Pack of 2)
units
Phototransistor 1 4µs 4µs Through Hole - 4 - 6.5mm 10mm +85°C -25°C 3mm -
RS Stock No. 908-7144
Mfr. Part No.OPB815WZ
BrandOptek
MYR18.29
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. 880-2003
Mfr. Part No.OPB830W55Z
BrandOptek
MYR17.18
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
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