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. 919-0174
Mfr. Part No.TCST2103
BrandVishay
R 17.717
Each (In a Tube of 85)
units
Phototransistor 1 10 μ 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. 708-5553
Mfr. Part No.TCST2103
BrandVishay
R 28.728
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. 818-7528
Mfr. Part No.TCST2202
BrandVishay
R 19.468
Each (In a Pack of 10)
units
Phototransistor 1 10µs 8µs Through Hole Leaded 4 24.5 x 6.3 x 10.8mm 10.8mm 24.5mm +85°C -55°C - 6.3mm
RS stock no. 136-0653
Mfr. Part No.TCPT1300X01
BrandVishay
R 10.624
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. 145-2313
Mfr. Part No.TCST2202
BrandVishay
R 17.955
Each (In a Tube of 85)
units
Phototransistor 1 10µs 8µs Through Hole Leaded 4 24.5 x 6.3 x 10.8mm 10.8mm 24.5mm +85°C -55°C - 6.3mm
RS stock no. 710-3816
Mfr. Part No.TCPT1300X01
BrandVishay
R 26.066
Each (In a Pack of 5)
units
Phototransistor 1 20µs 30µs Surface Mount SMD 6 4 x 5 x 4mm 4mm 4mm +85°C -40°C 3mm 5mm
RS stock no. 818-7512
Mfr. Part No.TCPT1350X01
BrandVishay
R 17.388
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. 708-5538
Mfr. Part No.TCST1103
BrandVishay
R 24.11
Each (In a Pack of 5)
units
Phototransistor 1 10µs 8µs Through Hole - 4 11.9 x 6.3 x 11.1mm 11.1mm 11.9mm +85°C -55°C 3.1mm 6.3mm
RS stock no. 919-0165
Mfr. Part No.TCST1103
BrandVishay
R 14.451
Each (In a Tube of 85)
units
Phototransistor 1 10 μ 8µs Through Hole - 4 11.9 x 6.3 x 11.1mm 11.1mm 11.9mm 85°C -55°C 3.1mm 6.3mm
RS stock no. 165-6371
Mfr. Part No.TCPT1350X01
BrandVishay
R 10.779
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. 180-8021
Mfr. Part No.TCST5250
BrandVishay
R 19.514
Each (In a Pack of 10)
units
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RS stock no. 708-5556
Mfr. Part No.TCST2300
BrandVishay
R 31.838
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. 710-3825
Mfr. Part No.TCUT1300X01
BrandVishay
R 7.812
Each (In a Pack of 5)
units
Phototransistor 2 20µs 30µs Surface Mount SMD 6 4 x 5.5 x 4mm 4mm 4mm +85°C -40°C 3mm 5.5mm
RS stock no. 145-2215
Mfr. Part No.TCST1202
BrandVishay
R 15.146
Each (In a Tube of 85)
units
Phototransistor 1 10µs 8µs Through Hole - 4 11.9 x 6.3 x 11.1mm 11.1mm 11.9mm +85°C -55°C 3.1mm 6.3mm
RS stock no. 174-2512
Mfr. Part No.TCUT1630X01
BrandVishay
R 17.714
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
RS stock no. 145-1801
Mfr. Part No.TCST1300
BrandVishay
R 19.212
Each (In a Tube of 85)
units
Phototransistor 1 10µs 8µs Through Hole - 4 11.9 x 6.3 x 11.1mm 11.1mm 11.9mm +85°C -55°C 3.1mm 6.3mm
RS stock no. 708-5547
Mfr. Part No.TCST1202
BrandVishay
R 24.822
Each (In a Pack of 5)
units
Phototransistor 1 10µs 8µs Through Hole - 4 11.9 x 6.3 x 11.1mm 11.1mm 11.9mm +85°C -55°C 3.1mm 6.3mm
RS stock no. 174-2528
Mfr. Part No.TCUT1630X01
BrandVishay
R 44.246
Each (In a Pack of 5)
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
RS stock no. 145-1800
Mfr. Part No.TCST1230
BrandVishay
R 11.159
Each (In a Tube of 60)
units
Phototransistor 1 15µs 10µs Through Hole - 4 8.3 x 4.7 x 8.15mm 8.15mm 8.3mm +85°C -25°C 2.8mm 4.7mm
RS stock no. 180-7971
Mfr. Part No.TCST1030
BrandVishay
R 13.109
Each (In a Pack of 10)
units
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