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

5372 Products showing for Optocouplers & Photodetectors

13 of 269
Temporarily out of stock
Broadcom, ACSL-6400-50TE DC Input Logic Gate Output Quad Optocoupler, Surface Mount, 16-Pin SO
  • RS Stock No. 230-5322
  • Mfr. Part No. ACSL-6400-50TE
Subtotal (1 reel of 1000 units)
SGD6,641.00(exc. GST)
In Stock
Broadcom, HCPL-4562-300E DC Input Phototransistor Output Optocoupler, Surface Mount, 8-Pin DIP
  • RS Stock No. 803-0838
  • Mfr. Part No. HCPL-4562-300E
Subtotal (1 pack of 5 units)
SGD14.35(exc. GST)
Temporarily out of stock
onsemi, MOC3042M DC Input Triac Output Optocoupler, Through Hole, 6-Pin DIP
  • RS Stock No. 178-7524
  • Mfr. Part No. MOC3042M
Subtotal (1 bag of 1000 units)
SGD535.00(exc. GST)
Temporarily out of stock
Vishay, SFH615A-4X017T DC Input Phototransistor Output Optocoupler, Through Hole, 4-Pin SMD
  • RS Stock No. 919-0880
  • Mfr. Part No. SFH615A-4X017T
Subtotal (1 reel of 1000 units)
SGD497.00(exc. GST)
In Stock
Vishay, LH1546AEF MOSFET Output Optocoupler, Surface Mount, 4-Pin SMD
  • RS Stock No. 180-7129
  • Mfr. Part No. LH1546AEF
Subtotal (1 pack of 5 units)
SGD12.78(exc. GST)
Last RS stock
Si8621BT-IS Skyworks Solutions Inc, 2-Channel Digital Isolator 150Mbit/s, 10 kVrms, 16-Pin SOIC W
  • RS Stock No. 905-3810P
  • Mfr. Part No. Si8621BT-IS
Subtotal 2 units (supplied in a tube)
SGD9.01(exc. GST)
In Stock
Broadcom, HCPL-316J-000E BiCMOS/DMOS Output Optocoupler, Surface Mount, 16-Pin SOIC
  • RS Stock No. 922-5851
  • Mfr. Part No. HCPL-316J-000E
Subtotal (1 tube of 45 units)
SGD234.72(exc. GST)
Last RS stock
Vishay, TEMD6200FX01 Visible Light Photodiode, Surface Mount 0805
  • RS Stock No. 710-3847
  • Mfr. Part No. TEMD6200FX01
Subtotal (1 pack of 10 units)
SGD7.41(exc. GST)
In Stock
Wurth Elektronik, 140100146000 Phototransistor Output Phototransistor, Surface Mount, 4-Pin LSOP
  • RS Stock No. 238-5794P
  • Mfr. Part No. 140100146000
Subtotal 50 units (supplied on a continuous strip)
SGD15.80(exc. GST)
In Stock
Broadcom, 6N139-000E DC Input Phototransistor Output Optocoupler, Through Hole, 8-Pin DIP
  • RS Stock No. 818-8230P
  • Mfr. Part No. 6N139-000E
Subtotal 10 units (supplied in a tube)
SGD12.35(exc. GST)
In Stock
Toshiba, TLP291(GB DC Input Transistor Output Optocoupler, Surface Mount, 4-Pin SO
  • RS Stock No. 796-5279P
  • Mfr. Part No. TLP291(GB
Subtotal 20 units (supplied in a tube)
SGD14.08(exc. GST)
Currently unavailable
Vishay, VOS617A-7X001T Phototransistor Output Optocoupler, Surface Mount, 4-Pin SSOP
  • RS Stock No. 244-4882
  • Mfr. Part No. VOS617A-7X001T
Subtotal (1 reel of 3000 units)
SGD768.00(exc. GST)
Currently unavailable
Vishay, VEMD5510FX01 Visible Light Photodiode, Surface Mount QFN
  • RS Stock No. 223-7720
  • Mfr. Part No. VEMD5510FX01
Subtotal (1 reel of 1000 units)
SGD1,359.00(exc. GST)
In Stock
Wurth Elektronik, 140817142200 Phototransistor Output Phototransistor, Through Hole, 4-Pin DIP
  • RS Stock No. 238-5866P
  • Mfr. Part No. 140817142200
Subtotal 50 units (supplied on a continuous strip)
SGD15.75(exc. GST)
In Stock
onsemi, MOC3063TVM DC Input Phototriac Output Optocoupler, Through Hole, 6-Pin DIP
  • RS Stock No. 761-3707P
  • Mfr. Part No. MOC3063TVM
Subtotal 5 units (supplied in a box)
SGD4.73(exc. GST)
In Stock
Toshiba, TLP358HF(F) Photo IC Output Optocoupler, Through Hole, 8-Pin DIP
  • RS Stock No. 885-1310
  • Mfr. Part No. TLP358HF(F)
Subtotal (1 pack of 5 units)
SGD19.28(exc. GST)
In Stock
Vishay, 4N35-X009T DC Input Phototransistor Output Dual Optocoupler, Surface Mount, 6-Pin SMD
  • RS Stock No. 902-6638
  • Mfr. Part No. 4N35-X009T
Subtotal (1 pack of 25 units)
SGD13.225(exc. GST)
Currently unavailable
Si8641BB-B-IS Skyworks Solutions Inc, 4-Channel Digital Isolator 150Mbps, 2.5 kV, 16-Pin SOIC W
  • RS Stock No. 823-2145P
  • Mfr. Part No. Si8641BB-B-IS
Subtotal 5 units (supplied in a tube)
SGD25.79(exc. GST)
In Stock
Wurth Elektronik, 140817142200 Phototransistor Output Phototransistor, Through Hole, 4-Pin DIP
  • RS Stock No. 238-5865
  • Mfr. Part No. 140817142200
Subtotal (1 reel of 1500 units)
SGD417.00(exc. GST)
Currently unavailable
Vishay, VO2601-X017T Transistor Output Optocoupler, Through Hole, 8-Pin SMD
  • RS Stock No. 257-6940
  • Mfr. Part No. VO2601-X017T
Subtotal (1 reel of 1000 units)
SGD1,302.00(exc. GST)
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