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.
Ambient Light Sensors
Ambient Light Sensors
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

5236 Products showing for Optocouplers & Photodetectors

2 of 262
Isocom, ISP815X DC Input Darlington Output Optocoupler, Through Hole, 4-Pin PDIP
  • RS Stock No. 453-0870
  • Mfr. Part No. ISP815X
Each (In a Pack of 10)
PHP28.215(exc. VAT)
Broadcom, HCPL-316J-000E BiCMOS/DMOS Output Optocoupler, Surface Mount, 16-Pin SOIC
  • RS Stock No. 547-4181
  • Mfr. Part No. HCPL-316J-000E
Each
PHP373.44(exc. VAT)
Vishay, LH1546AEF MOSFET Output Optocoupler, Surface Mount, 4-Pin SMD
  • RS Stock No. 180-7129
  • Mfr. Part No. LH1546AEF
Each (In a Pack of 5)
PHP99.56(exc. VAT)
Vishay, TCET1103 Phototransistor Output Optocoupler, Through Hole, 4-Pin DIP
  • RS Stock No. 180-7992
  • Mfr. Part No. TCET1103
Each (In a Pack of 25)
PHP19.95(exc. VAT)
onsemi, FOD817D300W DC Input Phototransistor Output Optocoupler, Through Hole, 4-Pin MDIP
  • RS Stock No. 808-8821
  • Mfr. Part No. FOD817D300W
Each (In a Pack of 25)
PHP14.44(exc. VAT)
ams OSRAM, BPW 21 Full Spectrum Si Photodiode, Through Hole TO-39
  • RS Stock No. 497-5661
  • Mfr. Part No. BPW 21
Each
PHP675.58(exc. VAT)
Toshiba, TLP2531(F) DC Input Transistor Output Dual Optocoupler, Through Hole, 8-Pin DIP
  • RS Stock No. 760-3202P
  • Mfr. Part No. TLP2531(F)
Each (Supplied in a Tube)
PHP179.208(exc. VAT)
Isocom, H11G2 DC Input Darlington Output Optocoupler, Through Hole, 6-Pin DIP
  • RS Stock No. 111-172
  • Mfr. Part No. H11G2
Each
PHP77.54(exc. VAT)
Lite-On, MOC3020 Triac Output Optocoupler, Through Hole, 6-Pin PDIP
  • RS Stock No. 168-9681
  • Mfr. Part No. MOC3020
Each (In a Tube of 65)
PHP18.526(exc. VAT)
onsemi, FOD852 DC Input Photodarlington Output Optocoupler, Through Hole, 4-Pin MDIP
  • RS Stock No. 808-8837
  • Mfr. Part No. FOD852
Each (In a Pack of 10)
PHP43.865(exc. VAT)
Vishay, SFH615A-2 DC Input Transistor Output Optocoupler, Through Hole, 4-Pin PDIP
  • RS Stock No. 110-185
  • Mfr. Part No. SFH615A-2
Each
PHP28.92(exc. VAT)
Toshiba, TLP2962(F) Photo IC Output Optocoupler, Through Hole, 8-Pin DIP
  • RS Stock No. 885-1200
  • Mfr. Part No. TLP2962(F)
Each (In a Pack of 10)
PHP39.006(exc. VAT)
Broadcom, HCPL-817-00DE DC Input Transistor Output Optocoupler, Through Hole, 4-Pin DIP
  • RS Stock No. 818-8375
  • Mfr. Part No. HCPL-817-00DE
Each (In a Pack of 25)
PHP22.301(exc. VAT)
EE-SX671P Omron, Slotted Optical Switch
  • RS Stock No. 821-0123
  • Mfr. Part No. EE-SX671P
Each
PHP1,422.17(exc. VAT)
EE-SX673A Omron, Slotted Optical Switch
  • RS Stock No. 818-1497
  • Mfr. Part No. EE-SX673A
Each
PHP2,381.98(exc. VAT)
EE-SX473 Omron, Slotted Optical Switch
  • RS Stock No. 821-0113
  • Mfr. Part No. EE-SX473
Each
PHP1,538.38(exc. VAT)
OPB705 Optek, Reflective Optical Sensor, Phototransistor Output
  • RS Stock No. 170-0778
  • Mfr. Part No. OPB705
Each (In a Bag of 25)
PHP228.256(exc. VAT)
Vishay TSOP4438, 38kHz IR Receiver ± 45, 45m Range
  • RS Stock No. 257-6901
  • Mfr. Part No. TSOP4438
Each (In a Tube of 90)
PHP32.30(exc. VAT)
OPB720B-30VZ Optek, Reflective Optical Sensor, Open Collector Output
  • RS Stock No. 414-181
  • Mfr. Part No. OPB720B-30VZ
Each
PHP1,835.19(exc. VAT)
OPB720B-06Z Optek, Reflective Optical Sensor, Open Collector Output
  • RS Stock No. 414-197
  • Mfr. Part No. OPB720B-06Z
Each
PHP1,262.23(exc. VAT)
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