Optocouplers & Photodetectors

We offer an extensive range of optocouplers (opto-isolators), photodetectors AND photointerrupter modules. Our range features leading brands such as Avago Technologies, Fairchild & Vishay.

What are optocouplers?

An Optocoupler, also known as a photocoupler or optical isolator, is an electronic component that interconnects two electrical circuits using an LED and a phototransistor, housed in the same opaque package. There are also other types of source-sensor combinations which include LED-photodiode, LED-LASCR, and lamp-photoresistor pairs. These different pairings can have various effects as a result of the materials used, such as impact on speed. Optocouplers are used mainly to couple isolated circuits and have a range of uses in both domestic and industrial applications - often used on building sites.

We stock:

  • Photodiodes: also known as a diode, is a semiconductor device that converts light into an electrical current, generated when photons are absorbed. Other types of optocouplers include photodarlingtons and TRIACs.
  • Reflective optical sensors: normally used in automotive production, but can also be found in manufacturing processes to ensure they run smoothly. They use a system of mirrors and light beams that sense when they are interrupted to report and show faults.
  • Digital isolators: used to ensure accuracy in circuits by eliminating ground loop errors to improve performance. They can also help develop component safety as isolation devices allowing circuits to coexist and communicate without interruption or signal interference.
Digital Isolator ICs
Digital Isolator ICs
IR Receivers
IR Receivers
IR Transceivers
IR Transceivers
Optocouplers
Optocouplers
Photodiodes
Photodiodes
Photomultipliers
Photomultipliers
Phototransistors
Phototransistors
Reflective Optical Sensors
Reflective Optical Sensors
Slotted Optical Switches
Slotted Optical Switches

4996 Products showing for Optocouplers & Photodetectors

1 of 250
Temporarily out of stock
Vishay CNY70 Through Hole Reflective Optical Sensor, Phototransistor Output 1-Channel, Leaded package
  • RS Stock No. 919-0082
  • Mfr. Part No. CNY70
Subtotal (1 tube of 80 units)
TWD1,448.00(exc. GST)
In Stock
Isocom TLP521-4GB DC Input 4-Channel Optocoupler, Through Hole, 16-Pin DIP
  • RS Stock No. 161-1035
  • Mfr. Part No. TLP521-4GB
Subtotal (1 tube of 25 units)
TWD835.00(exc. GST)
In Stock
Broadcom AFBR-S4N44P014M 1-Element Photomultiplier Photomultiplier, Surface Mount 4.3 x 4.2 mm package
  • RS Stock No. 286-1283
  • Mfr. Part No. AFBR-S4N44P014M
Subtotal (1 unit)
TWD874.00(exc. GST)
Currently unavailable
Toshiba TLP185(GB DC Input Optocoupler, Surface Mount, 4-Pin SOIC
  • RS Stock No. 796-5210
  • Mfr. Part No. TLP185(GB
Subtotal (1 pack of 5 units)
TWD61.00(exc. GST)
Last RS stock
Skyworks Solutions Inc, 2-Channel Digital Isolator 150 Mbps, 2.5 kVrms, 2.5/5.5 V, 8-Pin SOIC
  • RS Stock No. 169-0166
  • Mfr. Part No. SI8621BB-B-IS
Subtotal (1 tube of 96 units)
TWD4,108.80(exc. GST)
Currently unavailable
Vishay, CNY65B DC Input Phototransistor Output Optocoupler, Through Hole, 4-Pin PDIP
  • RS Stock No. 708-5345
  • Mfr. Part No. CNY65B
Subtotal (1 pack of 5 units)
TWD344.00(exc. GST)
Last RS stock
Centronic BPX65 Ultraviolet, Infrared, Visible Light Photodiode, 80 °, Through Hole TO-18
  • RS Stock No. 304-346
  • Mfr. Part No. BPX65
Subtotal (1 unit)
TWD469.00(exc. GST)
In Stock
TCST2103 Vishay Through Hole Slotted Optical Switch, Phototransistor Output
  • RS Stock No. 708-5553
  • Mfr. Part No. TCST2103
Subtotal (1 pack of 5 units)
TWD178.00(exc. GST)
In Stock
BPW85 Vishay ±25° Infrared, Visible Light Phototransistor, Through Hole 2-Pin 3 mm (T-1) package
  • RS Stock No. 815-1263
  • Mfr. Part No. BPW85
Subtotal (1 pack of 25 units)
TWD337.50(exc. GST)
Last RS stock
Vishay TCMT1107 DC Input Optocoupler, Surface Mount, 4-Pin Mini-Flat
  • RS Stock No. 699-8341P
  • Mfr. Part No. TCMT1107
Subtotal 10 units (supplied as a tape)
TWD122.00(exc. GST)
In Stock
onsemi FOD817BS DC Input Optocoupler, Surface Mount, 4-Pin MDIP
  • RS Stock No. 808-8809
  • Mfr. Part No. FOD817BS
Subtotal (1 pack of 25 units)
TWD190.00(exc. GST)
Last RS stock
Vishay ILD207T DC Input 2-Channel Optocoupler, Surface Mount, 8-Pin SOIC
  • RS Stock No. 710-4884
  • Mfr. Part No. ILD207T
Subtotal (1 pack of 5 units)
TWD220.00(exc. GST)
In Stock
Renesas Electronics PS2501-4-A DC Input 4-Channel Optocoupler, Through Hole, 16-Pin PDIP
  • RS Stock No. 453-7512
  • Mfr. Part No. PS2501-4-A
Subtotal (1 unit)
TWD60.00(exc. GST)
In Stock
Broadcom AC/DC Input 2-Channel Optocoupler, Surface Mount, 8-Pin SO
  • RS Stock No. 174-4170
  • Mfr. Part No. HCPL-0710-500E
Subtotal (1 pack of 2 units)
TWD321.00(exc. GST)
In Stock
OSI Optoelectronics Infrared Photodiode, 65 °, Through Hole TO-5
  • RS Stock No. 848-6266
  • Mfr. Part No. FCI-InGaAs-120L-FC
Subtotal (1 unit)
TWD3,605.00(exc. GST)
In Stock
onsemi FOD817A300 DC Input Optocoupler, Through Hole, 4-Pin DIP
  • RS Stock No. 739-0265P
  • Mfr. Part No. FOD817A300
Subtotal 5 units (supplied in a tube)
TWD43.00(exc. GST)
Currently unavailable
Lite-On, MOC3020 Triac Output Optocoupler, Through Hole, 6-Pin PDIP
  • RS Stock No. 691-2259
  • Mfr. Part No. MOC3020
Subtotal (1 pack of 5 units)
TWD101.00(exc. GST)
Last RS stock
Toshiba DC Input Optocoupler, Surface Mount, 4-Pin SOIC
  • RS Stock No. 796-5276
  • Mfr. Part No. TLP291(SE(T
Subtotal (1 pack of 20 units)
TWD288.00(exc. GST)
Currently unavailable
Toshiba TLP350(F) DC Input Optocoupler, Through Hole, 8-Pin PDIP
  • RS Stock No. 186-022
  • Mfr. Part No. TLP350(F)
Subtotal (1 pack of 2 units)
TWD196.00(exc. GST)
In Stock
Hamamatsu Photonics S5990-01 Visible Light Position Sensing Detector (PSD), Surface Mount Ceramic package
  • RS Stock No. 261-6272
  • Mfr. Part No. S5990-01
Subtotal (1 unit)
TWD791.00(exc. GST)
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