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. 666-6511
Mfr. Part No.GP1S092HCPIF
BrandSharp
SGD0.919
Each (In a Pack of 10)
units
Phototransistor 1 50µs 50µs Surface Mount SMD 4 2.6 x 4.5 x 2.9mm 2.9mm 2.6mm +85°C -25°C 2mm 4.5mm
RS Stock No. 818-7512
Mfr. Part No.TCPT1350X01
BrandVishay
SGD1.744
Each (In a Pack of 10)
units
Transistor 1 9µs 16µs Surface Mount - 6 5.5 x 4 x 4mm 4mm 5.5mm +125°C -40°C 3mm 4mm
RS Stock No. 616-5670
Mfr. Part No.KRB011
BrandKingbright
SGD1.88
Each (In a Pack of 5)
units
Phototransistor 1 8000ns 10000ns Surface Mount SMD 4 4 x 5 x 4mm 4mm 4mm +85°C -30°C 2mm 5mm
RS Stock No. 708-5556
Mfr. Part No.TCST2300
BrandVishay
SGD3.04
Each (In a Pack of 5)
units
Phototransistor 1 10µs 8µs Through Hole - 4 24.5 x 6.3 x 11.1mm 11.1mm 24.5mm +85°C -55°C 3.1mm 6.3mm
RS Stock No. 146-0720
Mfr. Part No.GP1S50J000F
BrandSharp
SGD1.304
Each (In a Bag of 100)
units
- - - - - - - - - - - - - -
RS Stock No. 180-7428
Mfr. Part No.TCST1030
BrandVishay
SGD1.051
Each (In a Tube of 65)
units
- - - - - - - - - - - - - -
RS Stock No. 908-7223
Mfr. Part No.OPB962N51
BrandOptek
SGD4.99
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. 908-7258
Mfr. Part No.OPB991P51Z
BrandOptek
SGD8.19
Each
units
Transistor - 70ns 70ns Panel Mount Wire - 18.47 x 6.35 x 15.63mm 15.63mm 18.47mm +70°C -40°C 3.18mm 6.35mm
RS Stock No. 165-6371
Mfr. Part No.TCPT1350X01
BrandVishay
SGD1.01
Each (On a Reel of 2000)
units
Transistor 1 9µs 16µs Surface Mount - 6 5.5 x 4 x 4mm 4mm 5.5mm +125°C -40°C 3mm 4mm
RS Stock No. 170-0964
Mfr. Part No.OPB990T51Z
BrandOptek
SGD8.058
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. 908-7069
Mfr. Part No.OPB390T51Z
BrandOptek
SGD6.79
Each
units
Transistor - - - Panel Mount Wire - 24.63 x 6.35 x 15.25mm 15.25mm 24.63mm +85°C -40°C 3.3mm 6.35mm
RS Stock No. 124-6792
Mfr. Part No.RPI-0352E
BrandROHM
SGD1.091
Each (In a Pack of 10)
units
Phototransistor 1 10µs 10µs Surface Mount - 4 6.4 x 4.2 x 5.4mm 5.4mm 6.4mm +85°C -30°C 3mm 4.2mm
RS Stock No. 880-2025
Mfr. Part No.OPB880P51Z
BrandOptek
SGD7.09
Each
units
- 1 - - Screw Mount - 4 18.47 x 6.35 x 15.75mm 15.75mm 18.47mm +85°C -40°C 3.3mm 6.35mm
RS Stock No. 177-4907
Mfr. Part No.EE-SX1081
BrandOmron
SGD2.82
Each (In a Box of 200)
units
Phototransistor 1 4µs 4µs Through Hole - 4 13.7 x 5 x 10mm 10mm 13.7mm +85°C -25°C 5mm 5mm
RS Stock No. 183-7482
Mfr. Part No.EESX3081
BrandOmron
SGD3.34
Each (In a Pack of 200)
units
- - - - - - - - - - - - - -
RS Stock No. 788-4953
Mfr. Part No.EE-SX384
BrandOmron
SGD10.335
Each (In a Pack of 2)
units
Phototransistor 1 3µs 20µs Through Hole - 5 12.5 x 5 x 8mm 8mm 12.5mm +75°C -40°C 3.5mm 5mm
RS Stock No. 136-0653
Mfr. Part No.TCPT1300X01
BrandVishay
SGD0.995
Each (On a Reel of 2000)
units
Transistor 2 20µs 30µs Surface Mount - 6 5.5 x 4 x 4mm 4mm 5.5mm +105°C -40°C 3mm 4mm
RS Stock No. 170-0965
Mfr. Part No.OPB992T51Z
BrandOptek
SGD8.231
Each (In a Bag of 100)
units
- 1 70ns 70ns Screw Mount - 5 12.32 x 6.35 x 10.8mm 10.8mm 12.32mm +70°C -40°C 3.18mm 6.35mm
RS Stock No. 666-6536
Mfr. Part No.GP1S52VJ000F
BrandSharp
SGD1.856
Each (In a Pack of 5)
units
Phototransistor 1 3µs 4µs Through Hole - 4 12.2 x 5 x 10mm 10mm 12.2mm +85°C -25°C 3mm 5mm
RS Stock No. 821-0139
Mfr. Part No.EE-SX674A
BrandOmron
SGD40.38
Each
units
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