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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

    5994 Products showing for Optocouplers & Photodetectors

    1 of 300
    Osram Opto, SFH 203 FA IR Si Photodiode, Through Hole 5mm package
    • RS Stock No. 195-697
    • Mfr. Part No. SFH 203 FA
    Each
    $1.43
    OPB720B-30VZ Optek, Reflective Optical Sensor, Open Collector Output
    • RS Stock No. 414-181
    • Mfr. Part No. OPB720B-30VZ
    Each
    $42.00
    Isocom, MOC3041 AC Input Triac Output Optocoupler, Through Hole, 6-Pin DIP
    • RS Stock No. 161-1148
    • Mfr. Part No. MOC3041
    Each (In a Pack of 10)
    $1.741
    OPB815WZ Optek, Chassis Mount Slotted Optical Switch, Phototransistor Output
    • RS Stock No. 194-4030
    • Mfr. Part No. OPB815WZ
    Each
    $8.41
    Broadcom, HCPL-7800-000E Transistor Output Optocoupler, Through Hole, 8-Pin PDIP
    • RS Stock No. 547-4197
    • Mfr. Part No. HCPL-7800-000E
    Each
    $15.51
    Isocom, H11G1 DC Input Darlington Output Optocoupler, Through Hole, 6-Pin DIP
    • RS Stock No. 111-166
    • Mfr. Part No. H11G1
    Each
    $0.66
    EE-SX4070 Omron, Through Hole Slotted Optical Switch, Open Collector Output
    • RS Stock No. 219-2527
    • Mfr. Part No. EE-SX4070
    Each
    $3.74
    OPB990T51Z Optek, Screw Mount Slotted Optical Switch
    • RS Stock No. 880-2037
    • Mfr. Part No. OPB990T51Z
    Each
    $10.87
    OPB830W55Z Optek, Screw Mount Slotted Optical Switch, Transistor Output
    • RS Stock No. 880-2003
    • Mfr. Part No. OPB830W55Z
    Each
    $9.21
    OPB705 Optek, Reflective Optical Sensor, Phototransistor Output
    • RS Stock No. 455-0947
    • Mfr. Part No. OPB705
    Each
    $5.57
    Vishay, TEFD4300 IR Si Photodiode, Through Hole 3mm package
    • RS Stock No. 773-0418
    • Mfr. Part No. TEFD4300
    Each (In a Bag of 10)
    $0.708
    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)
    $1.288
    Vishay, BPW21R Visible Light Si Photodiode, Through Hole TO-5
    • RS Stock No. 708-2813
    • Mfr. Part No. BPW21R
    Each
    $16.28
    EE-SX674A Omron, Slotted Optical Switch
    • RS Stock No. 821-0139
    • Mfr. Part No. EE-SX674A
    Each
    $66.74
    QRE1113GR onsemi, SMT Reflective Optical Sensor, Phototransistor Output
    • RS Stock No. 761-3984
    • Mfr. Part No. QRE1113GR
    Each (In a Pack of 5)
    $1.45
    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)
    $8.80
    Toshiba, TLP785(GB,F(C DC Input Transistor Output Optocoupler, Through Hole, 4-Pin DIP
    • RS Stock No. 756-3785
    • Mfr. Part No. TLP785(GB,F(C
    Each (In a Pack of 10)
    $0.356
    Hamamatsu, S9706 Visible Light Si Photodiode, Surface Mount Plastic
    • RS Stock No. 261-6301
    • Mfr. Part No. S9706
    Each
    $22.04
    Vishay, BPW20RF IR + Visible Light Si Photodiode, Through Hole TO-5
    • RS Stock No. 708-2804
    • Mfr. Part No. BPW20RF
    Each
    $8.04
    Broadcom, AFBR-S4N44P164M Ultraviolet, Visible Light 16-Element Photomultiplier, 420nm
    • RS Stock No. 261-9700
    • Mfr. Part No. AFBR-S4N44P164M
    Each
    $279.69
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