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. 880-2006
Mfr. Part No.OPB830W11Z
BrandOptek
SGD10.36
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. 908-7150
Mfr. Part No.OPB821Z
BrandOptek
SGD7.75
Each
units
Transistor - - - Through Hole Wire - 15.24 x 6.35 x 8.89mm 8.89mm 15.24mm +85°C -40°C 2.03mm 6.35mm
RS Stock No. 178-5082
Mfr. Part No.GP1S092HCPIF
BrandSharp
SGD0.527
Each (On a Reel of 2000)
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. 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. 161-2047
Mfr. Part No.TCUT1600X01
BrandVishay
SGD1.17
Each (On a Reel of 1300)
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. 908-7258
Mfr. Part No.OPB991P51Z
BrandOptek
SGD7.84
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. 165-1493
Mfr. Part No.KRB031
BrandKingbright
SGD1.305
Each (On a Reel of 1000)
units
Phototransistor 1 8000ns 10000ns Surface Mount SMD 4 4 x 6 x 5mm 5mm 4mm +85°C -40°C 3mm 6mm
RS Stock No. 177-4882
Mfr. Part No.EE-SX384
BrandOmron
SGD4.90
Each (In a Bag of 200)
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. 821-0113
Mfr. Part No.EE-SX473
BrandOmron
SGD32.89
Each
units
- - - - - - - - - - - - - -
RS Stock No. 178-1533
Mfr. Part No.GP1A51HRJ00F
BrandSharp
SGD1.64
Each (In a Bag of 100)
units
Photologic, Pull Up 1 0.1µs 0.05µs Screw Mount - 5 18 x 12.2 x 10mm 10mm 18mm +85°C -25°C 3mm 12.2mm
RS Stock No. 908-7214
Mfr. Part No.OPB942W55Z
BrandOptek
SGD7.97
Each
units
Transistor - 70ns 70ns Panel Mount Wire - 23.75 x 12.95 x 10.54mm 10.54mm 23.75mm +70°C -40°C 3.18mm 12.95mm
RS Stock No. 710-3825
Mfr. Part No.TCUT1300X01
BrandVishay
SGD2.71
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. 176-0824
Mfr. Part No.EE-SX4081
BrandOmron
SGD6.31
Each (In a Pack of 2)
units
- 1 - - Through Hole - 5 13.7 x 5 x 10mm 10mm 13.7mm +75°C -40°C 5mm 5mm
RS Stock No. 180-7428
Mfr. Part No.TCST1030
BrandVishay
SGD1.17
Each (In a Tube of 65)
units
- - - - - - - - - - - - - -
RS Stock No. 2509036020
Mfr. Part No.EE-SJ3-D
BrandOmron
SGD9.86
Each
units
- - - - - - - - - - - - - -
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Description:
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Description:
This family of slotted optical sensors, from Optek Technology, enable you to create a custom device from a standard product line. This flexibility includes choices of aperture, shell material, and lead spacing. An opaque plastic housing minimises the sensitivity to ...