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

5526 Products showing for Optocouplers & Photodetectors

1 of 277
In Stock
Vishay, BPW21R Visible Light Si Photodiode, Through Hole TO-5
  • RS Stock No. 708-2813P
  • Mfr. Part No. BPW21R
Each (Supplied in a Bag)
$16.73(exc. GST)
In Stock
TCRT1000 Vishay, Through Hole Reflective Optical Sensor, Phototransistor Output
  • RS Stock No. 708-2737
  • Mfr. Part No. TCRT1000
Each (In a Bag of 5)
$1.216(exc. GST)
In Stock
Hamamatsu, S5973 IR + Visible Light Si Photodiode, Through Hole TO-18
  • RS Stock No. 124-7160
  • Mfr. Part No. S5973
Each
$34.02(exc. GST)
In Stock
CNY70 Vishay, Through Hole Reflective Optical Sensor, Phototransistor Output
  • RS Stock No. 708-5348
  • Mfr. Part No. CNY70
Each (In a Pack of 5)
$1.332(exc. GST)
Limited stock
Vishay, BPW34 IR + Visible Light Si Photodiode, Through Hole
  • RS Stock No. 699-7616
  • Mfr. Part No. BPW34
Each (In a Pack of 5)
$2.328(exc. GST)
In Stock
TCST2103 Vishay, Through Hole Slotted Optical Switch, Phototransistor Output
  • RS Stock No. 708-5553
  • Mfr. Part No. TCST2103
Each (In a Pack of 5)
$2.118(exc. GST)
In Stock
OPB830W11Z Optek, Screw Mount Slotted Optical Switch, Transistor Output
  • RS Stock No. 880-2006
  • Mfr. Part No. OPB830W11Z
Each
$11.28(exc. GST)
In Stock
ams OSRAM, SFH 213 FA IR Si Photodiode, Through Hole 5mm package
  • RS Stock No. 654-8895
  • Mfr. Part No. SFH 213 FA
Each (In a Pack of 5)
$1.326(exc. GST)
In Stock
OPB830L51 Optek, Screw Mount Slotted Optical Switch, Phototransistor Output
  • RS Stock No. 455-0880
  • Mfr. Part No. OPB830L51
Each
$5.25(exc. GST)
Limited stock
GP1A51HRJ00F Sharp, Screw Mount Slotted Optical Switch, Photologic, Pull Up Output
  • RS Stock No. 666-6473
  • Mfr. Part No. GP1A51HRJ00F
Each (In a Pack of 5)
$2.23(exc. GST)
In Stock
ams OSRAM, SFH 203 IR + Visible Light Si Photodiode, Through Hole 5mm package
  • RS Stock No. 654-8154
  • Mfr. Part No. SFH 203
Each (In a Pack of 5)
$1.166(exc. GST)
In Stock
Optek OP593B IR Phototransistor, Through Hole 2-Pin TO-18 package
  • RS Stock No. 234-0978
  • Mfr. Part No. OP593B
Each
$1.34(exc. GST)
In Stock
OPB840W11Z Optek, Screw Mount Slotted Optical Switch, Transistor Output
  • RS Stock No. 880-2015
  • Mfr. Part No. OPB840W11Z
Each
$12.14(exc. GST)
Limited stock
QRE1113GR onsemi, SMT Reflective Optical Sensor, Phototransistor Output
  • RS Stock No. 761-3984
  • Mfr. Part No. QRE1113GR
Each (In a Pack of 5)
$1.90(exc. GST)
In Stock
onsemi, FOD817A DC Input Phototransistor Output Optocoupler, Through Hole, 4-Pin DIP
  • RS Stock No. 761-4439
  • Mfr. Part No. FOD817A
Each (In a Pack of 10)
$0.527(exc. GST)
In Stock
ams OSRAM, SFH 213 IR + Visible Light Si Photodiode, Through Hole 5mm package
  • RS Stock No. 654-8902
  • Mfr. Part No. SFH 213
Each (In a Pack of 5)
$1.666(exc. GST)
Last RS stock
ISO1541D Texas Instruments, 2-Channel I2C Digital Isolator 1Mbps, 2500 Vrms, 8-Pin SOIC
  • RS Stock No. 825-3075
  • Mfr. Part No. ISO1541D
Each (In a Pack of 2)
$12.81(exc. GST)
In Stock
OPB460T11 Optek, Screw Mount Slotted Optical Switch, Buffer, Open-Collector with 10K Pull-Up Resistor Output
  • RS Stock No. 455-0874
  • Mfr. Part No. OPB460T11
Each
$6.52(exc. GST)
In Stock
ams OSRAM, BPW 21 Full Spectrum Si Photodiode, Through Hole TO-39
  • RS Stock No. 497-5661P
  • Mfr. Part No. BPW 21
Each (Supplied in a Box)
$18.62(exc. GST)
In Stock
GP1A51HRJ00F Sharp, Screw Mount Slotted Optical Switch, Photologic, Pull Up Output
  • RS Stock No. 666-6473P
  • Mfr. Part No. GP1A51HRJ00F
Each (Supplied in a Bag)
$3.202(exc. GST)
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