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

5239 Products showing for Optocouplers & Photodetectors

1 of 262
Broadcom, HCPL-7840-000E Transistor Output Optocoupler, Through Hole, 8-Pin PDIP
  • RS Stock No. 547-4153
  • Mfr. Part No. HCPL-7840-000E
Each
PHP389.80(exc. VAT)
Hamamatsu, S5972 IR + Visible Light Si Photodiode, Through Hole TO-18
  • RS Stock No. 124-7159
  • Mfr. Part No. S5972
Each
PHP629.28(exc. VAT)
Broadcom, HCPL-7840-000E Transistor Output Optocoupler, Through Hole, 8-Pin PDIP
  • RS Stock No. 178-3161
  • Mfr. Part No. HCPL-7840-000E
Each (In a Tube of 50)
PHP281.848(exc. VAT)
Vishay, VO615A-5 DC Input Phototransistor Output Optocoupler, Through Hole, 4-Pin DIP
  • RS Stock No. 170-8252
  • Mfr. Part No. VO615A-5
Each (In a Tube of 100)
PHP10.07(exc. VAT)
Isocom, TLP521 AC Input NPN Phototransistor Output Optocoupler, Through Hole, 4-Pin DIP
  • RS Stock No. 161-1026
  • Mfr. Part No. TLP521
Each (In a Tube of 100)
PHP18.081(exc. VAT)
Vishay, CNY17F-4 Phototransistor Output Optocoupler, Through Hole, 6-Pin DIP
  • RS Stock No. 180-8250
  • Mfr. Part No. CNY17F-4
Each (In a Tube of 50)
PHP19.60(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)
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)
Lite-On, LTV-826 DC Input Transistor Output Dual Optocoupler, Through Hole, 8-Pin PDIP
  • RS Stock No. 168-9672
  • Mfr. Part No. LTV-826
Each (In a Tube of 50)
PHP15.428(exc. VAT)
Isocom, PS2505-1X AC Input NPN Phototransistor Output Optocoupler, Through Hole, 4-Pin DIP
  • RS Stock No. 161-1271
  • Mfr. Part No. PS2505-1X
Each (In a Pack of 20)
PHP22.015(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)
Vishay, BPW34 IR + Visible Light Si Photodiode, Through Hole
  • RS Stock No. 699-7616
  • Mfr. Part No. BPW34
Each (In a Pack of 5)
PHP67.774(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)
Hamamatsu, S5973 IR + Visible Light Si Photodiode, Through Hole TO-18
  • RS Stock No. 124-7160
  • Mfr. Part No. S5973
Each
PHP1,071.22(exc. VAT)
EE-SX670A Omron, Slotted Optical Switch
  • RS Stock No. 818-1491
  • Mfr. Part No. EE-SX670A
Each
PHP1,773.70(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)
Lite-On, LTV-817-C DC Input Transistor Output Optocoupler, Through Hole, 4-Pin PDIP
  • RS Stock No. 168-9667
  • Mfr. Part No. LTV-817-C
Each (In a Tube of 100)
PHP10.172(exc. VAT)
Isocom, MOC8101X AC Input NPN Phototransistor Output Optocoupler, Through Hole, 6-Pin DIP
  • RS Stock No. 161-1106
  • Mfr. Part No. MOC8101X
Each (In a Tube of 65)
PHP21.875(exc. VAT)
onsemi, HCPL3700VM CMOS Output Optocoupler, Through Hole, 8-Pin DIP
  • RS Stock No. 185-8626
  • Mfr. Part No. HCPL3700VM
Each (In a Pack of 2)
PHP166.48(exc. VAT)
EE-SX1081 Omron, Through Hole Slotted Optical Switch, Phototransistor Output
  • RS Stock No. 788-4943
  • Mfr. Part No. EE-SX1081
Each (In a Pack of 5)
PHP127.666(exc. VAT)
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