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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

    6139 Products showing for Optocouplers & Photodetectors

    7 of 307
    Product Image
    onsemi, FOD817A DC Input Phototransistor Output Optocoupler, Through Hole, 4-Pin DIP
    RS Stock No.:
    761-4439
    Mfr. Part No.:
    FOD817A
    $0.466
    Each (In a Pack of 10)
    Product Image
    QRE1113GR onsemi, SMT Reflective Optical Sensor, Phototransistor Output
    RS Stock No.:
    761-3984
    Mfr. Part No.:
    QRE1113GR
    $1.572
    Each (In a Pack of 5)
    Product Image
    Isocom, 4N35 DC Input Transistor Output Optocoupler, Through Hole, 6-Pin PDIP
    RS Stock No.:
    597-302
    Mfr. Part No.:
    4N35
    $1.17
    Each
    Product Image
    ams OSRAM, BPW 21 Full Spectrum Si Photodiode, Through Hole TO-39
    RS Stock No.:
    497-5661
    Mfr. Part No.:
    BPW 21
    $18.61
    Each
    Product Image
    onsemi, FOD3182 DC Input MOSFET Output Optocoupler, Through Hole, 8-Pin MDIP
    RS Stock No.:
    808-8733
    Mfr. Part No.:
    FOD3182
    $4.965
    Each (In a Pack of 2)
    Product Image
    onsemi, HCPL3700 AC/DC Input, Input Photodarlington Output Optocoupler, Surface Mount, 8-Pin PDIP
    RS Stock No.:
    903-4282
    Mfr. Part No.:
    HCPL3700
    $7.52
    Each (In a Pack of 5)
    Product Image
    Isocom, MOC3062 AC Input Triac Output Optocoupler, Through Hole, 6-Pin DIP
    RS Stock No.:
    161-1180
    Mfr. Part No.:
    MOC3062
    $1.612
    Each (In a Pack of 10)
    Product Image
    onsemi, FOD852 DC Input Photodarlington Output Optocoupler, Through Hole, 4-Pin MDIP
    RS Stock No.:
    166-2229
    Mfr. Part No.:
    FOD852
    $0.529
    Each (In a Bag of 2000)
    Product Image
    Vishay, CNY65 DC Input Transistor Output Optocoupler, Through Hole, 4-Pin PDIP
    RS Stock No.:
    145-1597
    Mfr. Part No.:
    CNY65
    $2.173
    Each (In a Tube of 30)
    Product Image
    Isocom, IS2801-4 DC Input NPN Phototransistor Output Quad Optocoupler, Surface Mount, 16-Pin SMD
    RS Stock No.:
    161-1258
    Mfr. Part No.:
    IS2801-4
    $2.404
    Each (In a Pack of 5)
    Product Image
    OPB829CZ Optek, Screw Mount Slotted Optical Switch
    RS Stock No.:
    170-0952
    Mfr. Part No.:
    OPB829CZ
    $7.477
    Each (In a Bag of 100)
    Product Image
    Hamamatsu, S4584-06 IR Photodiode, Surface Mount SMD
    RS Stock No.:
    124-7163
    Mfr. Part No.:
    S4584-06
    $9.50
    Each
    Product Image
    Isocom, MOC3042 AC Input Triac Output Optocoupler, Through Hole, 6-Pin DIP
    RS Stock No.:
    161-1154
    Mfr. Part No.:
    MOC3042
    $1.458
    Each (In a Pack of 10)
    Product Image
    OPB830L51 Optek, Screw Mount Slotted Optical Switch, Phototransistor Output
    RS Stock No.:
    170-0775
    Mfr. Part No.:
    OPB830L51
    $4.986
    Each (In a Bag of 25)
    Product Image
    Hamamatsu, S7105-04 Visible Light Si Position Sensing Detector (PSD), Surface Mount Miniature
    RS Stock No.:
    261-6282P
    Mfr. Part No.:
    S7105-04
    $13.65
    Each (Supplied in a Tube)
    Product Image
    onsemi, FOD3182 DC Input MOSFET Output Optocoupler, Through Hole, 8-Pin MDIP
    RS Stock No.:
    808-8733P
    Mfr. Part No.:
    FOD3182
    $4.865
    Each (Supplied in a Tube)
    Product Image
    GP2A210LCSJF Sharp, SMT Reflective Optical Sensor, Photointerrupter Output
    RS Stock No.:
    146-0774
    Mfr. Part No.:
    GP2A210LCSJF
    $27.58
    Each
    Product Image
    Isocom, H11L1 DC Input Schmitt Trigger Output Optocoupler, Through Hole, 6-Pin DIP
    RS Stock No.:
    171-2965
    Mfr. Part No.:
    H11L1
    $1.085
    Each (In a Tube of 65)
    Product Image
    Panasonic, AQY210EH DC Input MOSFET Output Optocoupler, Through Hole, 4-Pin DIP
    RS Stock No.:
    352-5467
    Mfr. Part No.:
    AQY210EH
    $3.56
    Each
    Product Image
    Hamamatsu, S7105-04 Visible Light Si Position Sensing Detector (PSD), Surface Mount Miniature
    RS Stock No.:
    261-6282
    Mfr. Part No.:
    S7105-04
    $13.95
    Each
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