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. 146-0734
Mfr. Part No.GP1A58HRJ00F
BrandSharp
£0.862
Each (In a Bag of 100)
Units
Photointerrupter 1 0.1µs 0.05µs Through Hole - 5 13.7 x 5.2 x 10mm 10mm 13.7mm -25°C +85°C 5.2mm 5mm
RS Stock No. 176-0817
Mfr. Part No.EE-SX4081
BrandOmron
£2.001
Each (In a Bag of 200)
Units
- 1 - - Through Hole - 5 13.7 x 5 x 10mm 10mm 13.7mm +75°C -40°C 5mm 5mm
RS Stock No. 161-2144
Mfr. Part No.TCUT1600X01
BrandVishay
£1.49
Each (In a Pack of 5)
Units
Transistor 2 9µs 16µs Surface Mount SMD 6 5.5 x 4 x 5.7mm 5.7mm 5.5mm 105°C -40°C - 4mm
RS Stock No. 174-2513
Mfr. Part No.TCUT1800X01
BrandVishay
£0.927
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
RS Stock No. 161-2046
Mfr. Part No.TCPT1600X01
BrandVishay
£0.52
Each (On a Reel of 1300)
Units
Transistor 1 9µs 16µs Surface Mount SMD 6 5.5 x 4 x 5.7mm 5.7mm 5.5mm 105°C -40°C - 4mm
RS Stock No. 161-2139
Mfr. Part No.TCPT1600X01
BrandVishay
£1.424
Each (In a Pack of 5)
Units
Transistor 1 9µs 16µs Surface Mount SMD 6 5.5 x 4 x 5.7mm 5.7mm 5.5mm 105°C -40°C - 4mm
RS Stock No. 146-0769
Mfr. Part No.GP1S173LCS2F
BrandSharp
£1.285
Each (In a Pack of 10)
Units
Phototransistor 1 3µs 4µs Snap-In - 5 27.1 x 9.8 x 16.3mm 16.3mm 27.1mm -30°C +95°C 4.3mm 9.8mm
RS Stock No. 146-0775
Mfr. Part No.GP1A173LCS3F
BrandSharp
£0.711
Each (In a Pack of 10)
Units
Photointerrupter 1 166 (Minimum)µs 166 (Minimum)µs Snap-In - 5 27.1 x 9.8 x 16.2mm 16.2mm 27.1mm -30°C +95°C 4.3mm 9.8mm
RS Stock No. 180-8021
Mfr. Part No.TCST5250
BrandVishay
£0.889
Each (In a Pack of 10)
Units
- - - - - - - - - - - - - -
RS Stock No. 2508806834
Mfr. Part No.EE-SX1235A-P2
BrandOmron
£2.39
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 2508958531
Mfr. Part No.NTE3100
£5.78
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 2509036020
Mfr. Part No.EE-SJ3-D
BrandOmron
£5.67
Each
Units
- - - - - - - - - - - - - -
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