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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.

    5742 Products showing for Optocouplers & Photodetectors

    1 of 288
    • RS Stock No. 145-1738
    • Mfr. Part No. TCRT5000L
    Each (In a Tube of 50)
    $1.488
    • RS Stock No. 110-185
    • Mfr. Part No. SFH615A-2
    Each
    $1.12
    • RS Stock No. 739-0240
    • Mfr. Part No. MOC3021M
    Each (In a Pack of 5)
    $1.044
    • RS Stock No. 806-1365P
    • Mfr. Part No. QSE159
    Each (Supplied in a Bag)
    $2.157
    • RS Stock No. 547-4153
    • Mfr. Part No. HCPL-7840-000E
    Each
    $14.72
    • RS Stock No. 885-1244
    • Mfr. Part No. TLP351H(F)
    Each (In a Pack of 10)
    $1.305
    • RS Stock No. 180-8280
    • Mfr. Part No. IL4116
    Each (In a Tube of 50)
    $5.66
    • RS Stock No. 922-5788
    • Mfr. Part No. HCPL-2611-000E
    Each (In a Tube of 50)
    $3.245
    • RS Stock No. 708-2813
    • Mfr. Part No. BPW21R
    Each
    $19.35
    • RS Stock No. 184-4829P
    • Mfr. Part No. FOD817SD
    Each (Supplied on a Reel)
    $0.459
    • RS Stock No. 168-5233
    • Mfr. Part No. SFH 2240
    Each (On a Reel of 1500)
    $1.341
    • RS Stock No. 185-9100
    • Mfr. Part No. FODM217DV
    Each (In a Pack of 13)
    $0.745
    • RS Stock No. 145-1635
    • Mfr. Part No. TSOP2238
    Each (In a Tube of 90)
    $0.921
    • RS Stock No. 168-9658
    • Mfr. Part No. LTV-814S-TA1
    Each (On a Reel of 1000)
    $0.22
    • RS Stock No. 922-5633
    • Mfr. Part No. HCPL-3120-300E
    Each (In a Tube of 50)
    $3.169
    • RS Stock No. 180-7756
    • Mfr. Part No. SFH628A-4
    Each (In a Pack of 10)
    $1.52
    • RS Stock No. 818-4535P
    • Mfr. Part No. VOS617A-3X001T
    Each (Supplied on a Reel)
    $0.665
    • RS Stock No. 161-1026
    • Mfr. Part No. TLP521
    Each (In a Tube of 100)
    $0.523
    • RS Stock No. 125-7579
    • Mfr. Part No. LTV-827S
    Each (In a Tube of 50)
    $0.626
    • RS Stock No. 262-3320
    • Mfr. Part No. SFH 3219
    Each (On a Reel of 2000)
    $0.489
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