Recently searched

    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

    5597 Products showing for Optocouplers & Photodetectors

    1 of 280
    onsemi, MOC3072SVM Optocoupler, Surface Mount, 6-Pin SMT
    • RS Stock No. 185-8023
    • Mfr. Part No. MOC3072SVM
    Each (In a Tube of 1000)
    HK$5.554
    Renesas, PS2501-1-A DC Input Transistor Output Optocoupler, Through Hole, 4-Pin PDIP
    • RS Stock No. 453-7499
    • Mfr. Part No. PS2501-1-A
    Each
    HK$4.80
    Hamamatsu, S1223 IR + Visible Light Si Photodiode, Through Hole TO-5
    • RS Stock No. 124-7161
    • Mfr. Part No. S1223
    Each
    HK$80.62
    Isocom, TLP521-4GB DC Input NPN Phototransistor Output Quad Optocoupler, Through Hole, 16-Pin DIP
    • RS Stock No. 161-1035
    • Mfr. Part No. TLP521-4GB
    Each (In a Tube of 25)
    HK$11.976
    Panasonic, AQY414EH DC Input MOSFET Output Optocoupler, Through Hole, 4-Pin DIP
    • RS Stock No. 352-5495
    • Mfr. Part No. AQY414EH
    Each
    HK$24.90
    Broadcom, HCPL-3700-300E AC/DC Input, Input CMOS Output Optocoupler, Surface Mount, 8-Pin DIP
    • RS Stock No. 818-8350
    • Mfr. Part No. HCPL-3700-300E
    Each (In a Pack of 2)
    HK$36.35
    BPW77NA Vishay, ±10 ° IR + Visible Light Phototransistor, Through Hole 3-Pin TO-18 package
    • RS Stock No. 815-1250
    • Mfr. Part No. BPW77NA
    Each (In a Pack of 5)
    HK$24.474
    Vishay, TCMT4606 AC Input Phototransistor Output Quad Optocoupler, Surface Mount, 16-Pin SOP
    • RS Stock No. 230-8350
    • Mfr. Part No. TCMT4606
    Each (In a Pack of 5)
    HK$17.448
    Vishay, BPW34 IR + Visible Light Si Photodiode, Through Hole
    • RS Stock No. 699-7616
    • Mfr. Part No. BPW34
    Each (In a Pack of 5)
    HK$8.72
    Vishay, BPW34 IR + Visible Light Si Photodiode, Through Hole
    • RS Stock No. 699-7616P
    • Mfr. Part No. BPW34
    Each (Supplied in a Bag)
    HK$8.72
    Isocom, ISD203 DC Input Transistor Output Dual Optocoupler, Through Hole, 8-Pin PDIP
    • RS Stock No. 817-218
    • Mfr. Part No. ISD203
    Each
    HK$7.00
    Toshiba, TLP291(GB-TP,SE(T DC Input Phototransistor Output Optocoupler, Surface Mount, 4-Pin SO
    • RS Stock No. 144-5264
    • Mfr. Part No. TLP291(GB-TP,SE(T
    Each (In a Pack of 50)
    HK$1.777
    Isocom, 6N138 DC Input Optocoupler, Through Hole, 8-Pin DIP
    • RS Stock No. 161-1147
    • Mfr. Part No. 6N138
    Each (In a Pack of 10)
    HK$5.42
    OPB990T51Z Optek, Screw Mount Slotted Optical Switch
    • RS Stock No. 880-2037
    • Mfr. Part No. OPB990T51Z
    Each
    HK$52.10
    NJL5901AR-1-TE1 Nisshinbo Micro Devices, SMT Reflective Optical Sensor, Phototransistor Output, COBP package
    • RS Stock No. 740-5058
    • Mfr. Part No. NJL5901AR-1-TE1
    Each (In a Pack of 5)
    HK$12.766
    OPB100Z Optek, Infrared Transceiver, Snap-In
    • RS Stock No. 880-1999
    • Mfr. Part No. OPB100Z
    Each
    HK$70.80
    Broadcom, ACPL-217-500E DC Input Transistor Output Optocoupler, Surface Mount, 4-Pin SOIC
    • RS Stock No. 693-6775
    • Mfr. Part No. ACPL-217-500E
    Each (In a Pack of 5)
    HK$3.82
    Infineon, PVI1050NS-TPBF DC Input MOSFET Output Dual Optocoupler, Surface Mount, 8-Pin DIP
    • RS Stock No. 830-3445
    • Mfr. Part No. PVI1050NS-TPBF
    Each (In a Pack of 2)
    HK$77.45
    OSI Optoelectronics, PIN-10DP IR Si Photodiode, Surface Mount BNC
    • RS Stock No. 183-7181
    • Mfr. Part No. PIN-10DP
    Each
    HK$1,761.88
    ams OSRAM, BPW 34 IR + Visible Light Si Photodiode, Through Hole DIP
    • RS Stock No. 247-240P
    • Mfr. Part No. BPW 34
    Each (Supplied on a Reel)
    HK$8.158
    Results per page
    1
    2
    3
    280