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. 171-3808
Mfr. Part No.OPB680
BrandOptek
HK$37.37
Each
units
Phototransistor 1 - - Through Hole - 4 12.19 x 10.92 x 8.89mm 8.89mm 12.19mm +100°C -40°C - 10.92mm
New
RS Stock No. 205-0583
Mfr. Part No.EE-SX3164-P2
BrandOmron
HK$26.218
Each (In a Bag of 150)
units
Photo IC 1 - - Through Hole - - - - - - - - -
RS Stock No. 146-0771
Mfr. Part No.GP1S50J000F
BrandSharp
HK$9.402
Each (In a Pack of 10)
units
- - - - - - - - - - - - - -
RS Stock No. 174-2512
Mfr. Part No.TCUT1630X01
BrandVishay
HK$10.135
Each (On a Reel of 1100)
units
Phototransistor 3 9µs 16µs Surface Mount SMD 10 5.7 x 5.9 x 7.1mm 7.1mm 5.7mm +105°C -40°C 3mm 5.9mm
New
RS Stock No. 205-0593
Mfr. Part No.EE-SX1025
BrandOmron
HK$12.664
Each (In a Bag of 100)
units
Phototransistor 1 - - Through Hole - - - - - - - - -
New
RS Stock No. 205-0586
Mfr. Part No.EE-SX4162-P2
BrandOmron
HK$38.622
Each (In a Pack of 5)
units
Photo IC 1 - - Through Hole - - - - - - - - -
RS Stock No. 708-5553
Mfr. Part No.TCST2103
BrandVishay
HK$15.604
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. 908-7135
Mfr. Part No.OPB802W55Z
BrandOptek
HK$40.28
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. 455-0868
Mfr. Part No.OPB625
BrandOptek
HK$19.13
Each
units
Buffer, Open-Collector with 10K Pull-Up Resistor 1 30ns 30ns Through Hole - 5 5.58 x 10.16 x 9.52mm 9.52mm 5.58mm +100°C -40°C 4.83mm 10.16mm
RS Stock No. 183-7486
Mfr. Part No.EESX1320
BrandOmron
HK$5.13
Each (In a Pack of 2000)
units
- - - - - - - - - - - - - -
RS Stock No. 880-2021
Mfr. Part No.OPB866T55
BrandOptek
HK$23.71
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. 194-4024
Mfr. Part No.OPB815L
BrandOptek
HK$24.24
Each
units
Phototransistor 1 - - Screw Mount - 4 32 x 6.6 x 14.35mm 14.35mm 32mm +80°C -40°C 9.53mm 6.6mm
RS Stock No. 788-4931
Mfr. Part No.EE-SX1046
BrandOmron
HK$38.83
Each (In a Pack of 2)
units
Phototransistor 1 4µs 4µs Through Hole - 4 - 6.5mm 10mm +85°C -25°C 3mm -
New
RS Stock No. 205-0559
Mfr. Part No.EE-SX398
BrandOmron
HK$19.516
Each (In a Pack of 5)
units
Photo IC 1 - - Through Hole - - - - - - - - -
RS Stock No. 178-5031
Mfr. Part No.GP1S093HCZ0F
BrandSharp
HK$3.121
Each (In a Tube of 100)
units
Phototransistor 1 50µs 50µs Through Hole - 4 2.6 x 4.5 x 2.9mm 2.9mm 2.6mm +85°C -25°C 2mm 4.5mm
New
RS Stock No. 205-0589
Mfr. Part No.EE-SX3239-P2
BrandOmron
HK$23.386
Each (In a Bag of 100)
units
Photo IC 1 - - Through Hole - - - - - - - - -
RS Stock No. 176-0819
Mfr. Part No.EE-SX1350
BrandOmron
HK$7.922
Each (On a Reel of 400)
units
Phototransistor 1 11µs 14µs Surface Mount SMD 6 9 x 4 x 9mm 9mm 9mm +85°C -30°C 5mm 4mm
RS Stock No. 700-3996
Mfr. Part No.RPI-579N1
BrandROHM
HK$10.755
Each (In a Pack of 2)
units
Phototransistor 1 10000ns 10000ns Through Hole - 4 13.8 x 6 x 10mm 10mm 13.8mm +85°C -25°C 5mm 6mm
RS Stock No. 908-7227
Mfr. Part No.OPB972T55
BrandOptek
HK$29.44
Each
units
Transistor - 70ns 70ns Through Hole Pin 5 24.63 x 6.35 x 10.8mm 10.8mm 24.63mm +70°C -40°C 3.18mm 6.35mm
RS Stock No. 174-2513
Mfr. Part No.TCUT1800X01
BrandVishay
HK$11.814
Each (On a Reel of 1100)
units
Phototransistor 4 9µs 16µs Surface Mount SMD 10 5.7 x 5.9 x 7.1mm 7.1mm 5.7mm +105°C -40°C 3mm 5.9mm
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