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

    5742 Products showing for Optocouplers & Photodetectors

    1 of 288
    TCRT5000L Vishay, Through Hole Reflective Optical Sensor, Transistor Output 2, Leaded package
    • RS Stock No. 145-1738
    • Mfr. Part No. TCRT5000L
    Each (In a Tube of 50)
    $1.488
    Vishay, SFH615A-2 DC Input Transistor Output Optocoupler, Through Hole, 4-Pin PDIP
    • RS Stock No. 110-185
    • Mfr. Part No. SFH615A-2
    Each
    $1.12
    onsemi, MOC3021M DC Input Triac Output Optocoupler, Through Hole, 6-Pin DIP
    • RS Stock No. 739-0240
    • Mfr. Part No. MOC3021M
    Each (In a Pack of 5)
    $1.044
    onsemi, QSE159 Photodetector Amplifier Unit, Through Hole Side-looker Package
    • RS Stock No. 806-1365P
    • Mfr. Part No. QSE159
    Each (Supplied in a Bag)
    $2.157
    Broadcom, HCPL-7840-000E Transistor Output Optocoupler, Through Hole, 8-Pin PDIP
    • RS Stock No. 547-4153
    • Mfr. Part No. HCPL-7840-000E
    Each
    $14.72
    Toshiba, TLP351H(F) Photo IC Output Optocoupler, Through Hole, 8-Pin DIP
    • RS Stock No. 885-1244
    • Mfr. Part No. TLP351H(F)
    Each (In a Pack of 10)
    $1.305
    Vishay, IL4116 Phototriac Output Optocoupler, Through Hole, 6-Pin DIP
    • RS Stock No. 180-8280
    • Mfr. Part No. IL4116
    Each (In a Tube of 50)
    $5.66
    Broadcom, HCPL-2611-000E DC Input Transistor Output Optocoupler, Through Hole, 8-Pin DIP
    • RS Stock No. 922-5788
    • Mfr. Part No. HCPL-2611-000E
    Each (In a Tube of 50)
    $3.245
    Vishay, BPW21R Visible Light Si Photodiode, Through Hole TO-5
    • RS Stock No. 708-2813
    • Mfr. Part No. BPW21R
    Each
    $19.35
    onsemi, FOD817SD AC/DC Input Phototransistor Output Optocoupler, Surface Mount, 4-Pin SMT
    • RS Stock No. 184-4829P
    • Mfr. Part No. FOD817SD
    Each (Supplied on a Reel)
    $0.459
    ams OSRAM, SFH 2240 Photodiode, Surface Mount Top LED
    • RS Stock No. 168-5233
    • Mfr. Part No. SFH 2240
    Each (On a Reel of 1500)
    $1.341
    onsemi, FODM217DV Optocoupler, Surface Mount, 4-Pin SOP
    • RS Stock No. 185-9100
    • Mfr. Part No. FODM217DV
    Each (In a Pack of 13)
    $0.745
    Vishay TSOP2238, 38kHz IR Receiver, 950nm, 45m Range, Through Hole, 6 x 5.6 x 6.95mm
    • RS Stock No. 145-1635
    • Mfr. Part No. TSOP2238
    Each (In a Tube of 90)
    $0.921
    Lite-On, LTV-814S-TA1 AC Input Transistor Output Optocoupler, Surface Mount, 4-Pin SMT
    • RS Stock No. 168-9658
    • Mfr. Part No. LTV-814S-TA1
    Each (On a Reel of 1000)
    $0.22
    Broadcom, HCPL-3120-300E DC Input Transistor Output Optocoupler, Surface Mount, 8-Pin DIP
    • RS Stock No. 922-5633
    • Mfr. Part No. HCPL-3120-300E
    Each (In a Tube of 50)
    $3.169
    Vishay, SFH628A-4 Phototransistor Output Optocoupler, Through Hole, 4-Pin DIP
    • RS Stock No. 180-7756
    • Mfr. Part No. SFH628A-4
    Each (In a Pack of 10)
    $1.52
    Vishay, VOS617A-3X001T DC Input Phototransistor Output Optocoupler, Surface Mount, 4-Pin SSOP
    • RS Stock No. 818-4535P
    • Mfr. Part No. VOS617A-3X001T
    Each (Supplied on a Reel)
    $0.665
    Isocom, TLP521 AC Input NPN Phototransistor Output Optocoupler, Through Hole, 4-Pin DIP
    • RS Stock No. 161-1026
    • Mfr. Part No. TLP521
    Each (In a Tube of 100)
    $0.523
    Lite-On, LTV-827S DC Input Dual Optocoupler, Surface Mount, 8-Pin PDIP
    • RS Stock No. 125-7579
    • Mfr. Part No. LTV-827S
    Each (In a Tube of 50)
    $0.626
    SFH 3219 ams OSRAM, IR + Visible Light Phototransistor
    • RS Stock No. 262-3320
    • Mfr. Part No. SFH 3219
    Each (On a Reel of 2000)
    $0.489
    Results per page
    1
    2
    3
    288

    Related links