Reflective Optical Sensors

Reflective optical sensors are photoelectrical sensors that are used to detect the presence or absence of objects, or measure the distance to those objects. They are a non-contact type of sensor, often used in the automation industry. They can be used to provide real-time information in a manufacturing setting in order to keep processes running smoothly.

How do reflective optical sensors work?

A reflector is positioned opposite the light sensor, and a light beam is passed back and forth between the two. When an object is present, the beam is interrupted, and the sensor will send an electrical signal to the output device.

In some cases, polarising filters may be needed if the objects being detected are themselves reflective. These allow the sensor to tell the difference between light reflected by the reflector and the object.

Advantages of using reflective optical sensors

The advantage of using a reflective optical sensor over a through beam sensor is that they are much easier and less time consuming to install. This is because the transmitter and receiver are housed within the same body.


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Description Price Peak Sensor Distance Output Device Typical Rise Time Typical Fall Time Number of Channels Number of Pins Mounting Type Package Type Dimensions Height Length Maximum Operating Temperature Minimum Operating Temperature Width
RS Stock No. 708-5017
Mfr. Part No.TCRT5000
BrandVishay
TWD41.80
Each (In a Pack of 5)
units
2.5mm Phototransistor - - 1 - Through Hole PCB - 7mm 10.2mm + 85°C - 25°C -
RS Stock No. 919-0001
Mfr. Part No.TCRT5000
BrandVishay
TWD25.60
Each (In a Tube of 50)
units
2.5mm - - - - - - - - - - - - -
RS Stock No. 170-2386
Mfr. Part No.GP2Y0A02YK0F
BrandSharp
TWD383.70
Each (In a Tray of 50)
units
1500mm - - - - 3 Screw Mount - 44.5 x 18.9 x 21.6mm 21.6mm 44.5mm +60°C -10°C 18.9mm
RS Stock No. 315-450
Mfr. Part No.GP2Y0A02YK0F
BrandSharp
TWD518.00
Each
units
1500mm - - - - 3 Screw Mount - 44.5 x 18.9 x 21.6mm 21.6mm 44.5mm +60°C -10°C 18.9mm
RS Stock No. 178-7438
Mfr. Part No.GP2Y0A41SK0F
BrandSharp
TWD203.50
Each (In a Tray of 1000)
units
300mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 666-6568
Mfr. Part No.GP2Y0A41SK0F
BrandSharp
TWD339.00
Each
units
300mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 919-0082
Mfr. Part No.CNY70
BrandVishay
TWD28.40
Each (In a Tube of 80)
units
0.5mm Phototransistor - - 1 4 Through Hole - 7 x 7 x 6mm 6mm 7mm +85°C -40°C 7mm
RS Stock No. 178-7429
Mfr. Part No.GP2Y0A710K0F
BrandSharp
TWD485.50
Each (In a Box of 500)
units
5500mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 666-6577
Mfr. Part No.GP2Y0A710K0F
BrandSharp
TWD703.00
Each
units
5500mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 708-5348
Mfr. Part No.CNY70
BrandVishay
TWD39.80
Each (In a Pack of 5)
units
0.5mm Phototransistor - - 1 4 Through Hole - 7 x 7 x 6mm 6mm 7mm +85°C -40°C 7mm
RS Stock No. 455-0975
Mfr. Part No.SG2BC, BCD
BrandKodenshi
TWD103.60
Each (In a Pack of 5)
units
- Phototransistor 30µs 30µs - 4 - - - - - +90°C -20°C -
RS Stock No. 165-2675
Mfr. Part No.TCRT1000
BrandVishay
TWD15.80
Each (In a Bag of 1000)
units
1mm Phototransistor - - 1 4 Through Hole - 7 x 2.5 x 4mm 4mm 7mm +85°C -40°C 2.5mm
RS Stock No. 708-2737
Mfr. Part No.TCRT1000
BrandVishay
TWD37.60
Each (In a Bag of 5)
units
1mm Phototransistor - - 1 4 Through Hole - 7 x 2.5 x 4mm 4mm 7mm +85°C -40°C 2.5mm
RS Stock No. 455-0931
Mfr. Part No.OPB702
BrandOptek
TWD103.00
Each
units
3.81mm Phototransistor - - 1 4 Through Hole - 17.78 x 4.78 x 8.89mm 8.89mm 17.78mm +85°C -40°C 4.78mm
RS Stock No. 170-0777
Mfr. Part No.OPB702
BrandOptek
TWD100.90
Each (In a Bag of 25)
units
3.81mm Phototransistor - - 1 4 Through Hole - 17.78 x 4.78 x 8.89mm 8.89mm 17.78mm +85°C -40°C 4.78mm
RS Stock No. 178-7437
Mfr. Part No.GP2Y0A21YK0F
BrandSharp
TWD238.10
Each (In a Box of 1000)
units
800mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 666-6564
Mfr. Part No.GP2Y0A21YK0F
BrandSharp
TWD397.00
Each
units
800mm - - - - - - - - - - +60°C -10°C -
RS Stock No. 761-3984
Mfr. Part No.QRE1113GR
TWD30.00
Each (In a Pack of 5)
units
- Phototransistor 20µs 20µs 1 4 Surface Mount SMD 3.6 x 2.9 x 1.7mm 1.7mm 3.6mm +85°C -40°C 2.9mm
RS Stock No. 124-6800
Mfr. Part No.RPR-220
BrandROHM
TWD44.00
Each (In a Pack of 10)
units
6mm Phototransistor 10µs 10µs 1 4 Through Hole Radial 6.4 x 4.9 x 6.5mm 6.5mm 6.4mm +85°C -25°C 4.9mm
RS Stock No. 170-9658
Mfr. Part No.SFH 9206-6/7
TWD18.00
Each (On a Reel of 1000)
units
1 → 5mm Phototransistor 30µs 40µs - 6 Surface Mount - 4.2 x 3.4 x 2.1mm 2.1mm 4.2mm +100°C -40°C 3.4mm