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    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

    5974 Products showing for Optocouplers & Photodetectors

    9 of 299
    OSI Optoelectronics, UV-035EQ UV Si Photodiode, Through Hole TO-8
    • RS Stock No. 177-5573
    • Mfr. Part No. UV-035EQ
    Each (In a Tray of 5)
    €60.378
    onsemi, MOC3020M DC Input Triac Output Optocoupler, Through Hole, 6-Pin DIP
    • RS Stock No. 761-3388
    • Mfr. Part No. MOC3020M
    Each (In a Pack of 10)
    €0.372
    onsemi, FOD817BS DC Input Transistor Output Optocoupler, Surface Mount, 4-Pin MDIP
    • RS Stock No. 808-8809
    • Mfr. Part No. FOD817BS
    Each (In a Pack of 25)
    €0.316
    OPB620 Optek, Through Hole Slotted Optical Switch, Phototransistor Output
    • RS Stock No. 204-3305
    • Mfr. Part No. OPB620
    Each (In a Pack of 5)
    €1.694
    QRE1113 onsemi, Through Hole Reflective Optical Sensor, Phototransistor Output, Miniature package
    • RS Stock No. 862-9400
    • Mfr. Part No. QRE1113
    Each (In a Pack of 10)
    €0.753
    onsemi, QSD2030 Photodiode Output Optocoupler, Through Hole, 2-Pin T-1
    • RS Stock No. 186-8671P
    • Mfr. Part No. QSD2030
    Each (Supplied in a Bag)
    €0.391
    Toshiba, TLP185(BL,SE(T DC Input Phototransistor Output Optocoupler, Surface Mount, 4-Pin SO
    • RS Stock No. 896-2505
    • Mfr. Part No. TLP185(BL,SE(T
    Each (In a Pack of 25)
    €0.176
    OPB840W11Z Optek, Screw Mount Slotted Optical Switch, Transistor Output
    • RS Stock No. 880-2015
    • Mfr. Part No. OPB840W11Z
    Each
    €6.14
    Toshiba, TLP185(GR DC Input Transistor Output Optocoupler, Surface Mount, 4-Pin SOIC
    • RS Stock No. 796-5229
    • Mfr. Part No. TLP185(GR
    Each (In a Pack of 5)
    €0.436
    Wurth Elektronik, 1541201EEA400 IR Si Photodiode, Surface Mount 1206
    • RS Stock No. 184-6978
    • Mfr. Part No. 1541201EEA400
    Each (On a Reel of 3000)
    €0.229
    onsemi, MOC3061M AC Input Triac Output Optocoupler, Through Hole, 6-Pin PDIP
    • RS Stock No. 671-1440
    • Mfr. Part No. MOC3061M
    Each (In a Pack of 5)
    €0.902
    Toshiba, TLP187(E(T DC Input Phototransistor Output Optocoupler, Surface Mount, 4-Pin SO
    • RS Stock No. 885-1143
    • Mfr. Part No. TLP187(E(T
    Each (In a Pack of 25)
    €0.411
    onsemi, MOC3041M DC Input Triac Output Optocoupler, Through Hole, 6-Pin DIP
    • RS Stock No. 178-4756
    • Mfr. Part No. MOC3041M
    Each (In a Tube of 50)
    €0.607
    OPB993T51Z Optek, Panel Mount Slotted Optical Switch, Transistor Output
    • RS Stock No. 908-7264
    • Mfr. Part No. OPB993T51Z
    Each
    €5.66
    onsemi, FOD8523SD DC Input Photodarlington Output Optocoupler, Surface Mount, 4-Pin PDIP
    • RS Stock No. 903-4229
    • Mfr. Part No. FOD8523SD
    Each (In a Pack of 10)
    €0.775
    Vishay, CNY17-1 DC Input Transistor Output Optocoupler, Through Hole, 6-Pin PDIP
    • RS Stock No. 145-1596
    • Mfr. Part No. CNY17-1
    Each (In a Tube of 50)
    €0.347
    onsemi, FODM217CV Optocoupler, Surface Mount, 4-Pin SOP
    • RS Stock No. 185-8010
    • Mfr. Part No. FODM217CV
    Each (In a Tube of 3000)
    €0.322
    onsemi, QSD2030F Si Photodiode, Through Hole 5mm package
    • RS Stock No. 805-0539P
    • Mfr. Part No. QSD2030F
    Each (Supplied in a Bag)
    €0.446
    Panasonic, APV2111VY MOSFET Output Optocoupler, Through Hole, 4-Pin
    • RS Stock No. 247-4143
    • Mfr. Part No. APV2111VY
    Each (On a Tape of 2)
    €1.76
    QRD1114 onsemi, IR Phototransistor, Through Hole 4-Pin Custom 4L package
    • RS Stock No. 184-1082
    • Mfr. Part No. QRD1114
    Each (In a Bag of 100)
    €0.936
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