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    Optocouplers

    An optocoupler IC, also known as an opto-isolator or photocoupler, is a semiconductor device which is used to couple isolated circuits. Within an optocoupler you will find a light emitter and a light sensor. Optocouplers usually come in a semiconductor package, such as SOIC or PDIP.

    How does an optocoupler IC work?

    Optocouplers work by transferring energy from one circuit to another circuit via an optical transmission path, while providing electrical isolation

    The light emitter device can come in the form of an LED (light emitting diode) that produces IR or visible light, or a laser diode. The light emitter receives the input and converts it into a light signal. The light detector senses the light emitter and converts it back into an electrical signal.

    Optocouplers are often used in high-voltage applications to block the high voltages and variations in voltage. This ensures that, if there is a spike in one part of a circuit, it will not affect other parts. Therefore they are ideal for applications which may experience variations in voltage.

    Types of Optocoupler:

    • Resistive

    • Photodiode

    • Phototransistor

    • Bidirectional

    Output Types

    • CMOS

    • Darlington

    • IGBT Gate Drive

    • Logic Gate

    • MOSFET

    • Photodarlington

    • Phototransistor

    • Single Transistor

    • TRIAC

    3501 Products showing for Optocouplers

    • RS Stock No. 135-7882
    • Mfr. Part No. LOC117S
    Each (In a Tube of 50)
    MYR9.215
    IXYS
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    3750 Vrms
    -
    -
    -
    -
    LOC
    • RS Stock No. 185-8758
    • Mfr. Part No. FODM217AV
    Each (In a Pack of 13)
    MYR2.055
    onsemi
    Logic Output
    Surface Mount
    -
    1.4V
    1
    4
    SOP
    -
    3µs
    50 mA
    3750 Vrms ac
    160%
    80%
    3µs
    -
    FODM217
    Each (Supplied in a Box)
    MYR27.95
    onsemi
    Logic Output
    Through Hole
    Schmitt Trigger
    2V
    1
    6
    DIP
    DC
    7.5ns
    30 mA
    7500 V
    -
    -
    12ns
    -
    H11N
    Each
    MYR31.80
    Broadcom
    Logic Output
    Surface Mount
    Transistor
    0.2V
    1
    8
    DIP
    DC
    -
    15 mA
    20 kV
    -
    -
    -
    -
    HCPL
    • RS Stock No. 185-9100
    • Mfr. Part No. FODM217DV
    Each (In a Pack of 13)
    MYR2.156
    onsemi
    Logic Output
    Surface Mount
    -
    1.4V
    1
    4
    SOP
    -
    3µs
    50 mA
    3750 Vrms ac
    600%
    300%
    3µs
    -
    FODM217
    Each
    MYR30.87
    Broadcom
    Logic Output
    Through Hole
    Transistor
    0.2V
    -
    8
    DIP
    DC
    -
    15 mA
    3.75 kVrms
    -
    -
    -
    -
    HCPL
    • RS Stock No. 135-8082P
    • Mfr. Part No. LOC117S
    Each (Supplied in a Tube)
    MYR14.46
    IXYS
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    3750 Vrms
    -
    -
    -
    -
    LOC
    Each (Supplied in a Bag)
    MYR3.05
    onsemi
    Logic Output
    Through Hole
    Schmitt Trigger
    1.5V
    1
    6
    DIP
    -
    0.1µs
    10 mA
    4.17 kVrms
    -
    -
    0.1µs
    -
    H11L
    Each (Supplied on a Reel)
    MYR11.10
    onsemi
    Logic Output
    Surface Mount
    Logic Gate
    1.8V
    -
    5
    SO
    DC
    20ns
    50 mA
    3750 V ac
    -
    -
    10ns
    -
    FODM
    • RS Stock No. 174-4123
    • Mfr. Part No. ACPL-W50L-560E
    Each (In a Pack of 5)
    MYR15.57
    Broadcom
    Logic Output
    Surface Mount
    -
    1.95V
    1
    6
    SO
    DC
    -
    40 mA
    5000 Vrms
    200%
    93%
    -
    -
    ACPL
    Each
    MYR33.19
    Broadcom
    Logic Output
    Surface Mount
    Transistor
    6.5V
    -
    8
    SOIC
    DC
    9ns
    10 μA
    3.75 kVrms
    -
    -
    8ns
    -
    HCPL
    Each
    MYR30.21
    Broadcom
    Logic Output
    Through Hole
    Logic Gate
    1.85V
    2
    8
    DIP
    -
    30ns
    230 mA
    3750 Vrms
    -
    -
    7ns
    -
    HCPL
    Each (Supplied on a Reel)
    MYR6.175
    onsemi
    -
    Surface Mount
    Open Collector
    1.5V
    1
    5
    MFP
    -
    -
    10 mA
    3.75 kVrms
    -
    -
    -
    -
    FODM
    Each
    MYR19.78
    Broadcom
    Logic Output
    Surface Mount
    Transistor
    1.95V
    -
    8
    DIP
    DC
    0.1µs
    16 mA
    3.75 kVrms
    -
    -
    0.1µs
    -
    HCPL
    Each (In a Tube of 50)
    MYR20.683
    Broadcom
    Logic Output
    Through Hole
    Logic Gate
    1.85V
    2
    8
    DIP
    -
    30ns
    230 mA
    3750 Vrms
    -
    -
    7ns
    -
    HCPL
    Each (Supplied in a Tube)
    MYR8.598
    Toshiba
    Logic Output
    Through Hole
    Infrared LED
    1.7V
    1
    8
    DIP
    AC
    15ns
    10 mA
    3750 Vrms
    -
    -
    8ns
    -
    TLP
    Each (In a Tube of 50)
    MYR10.574
    Broadcom
    Logic Output
    Surface Mount
    Logic Gate
    1.85V
    1
    8
    DIP
    DC
    30ns
    1.8 mA
    3750 Vrms
    -
    -
    7ns
    -
    HCPL
    Each (Supplied on a Reel)
    MYR5.927
    onsemi
    Logic Output
    Surface Mount
    Photodetector
    1.8V
    1
    8
    DIP
    DC
    30ns
    200 mA
    5000 V ac
    -
    -
    10ns
    -
    6N137
    Each (In a Tube of 50)
    MYR10.935
    Vishay
    -
    Through Hole
    Triac
    -
    1
    6
    PDIP
    -
    -
    60 mA
    5300 V ac
    -
    -
    -
    -
    IL420
    Each (In a Pack of 5)
    MYR6.526
    onsemi
    Logic Output
    Through Hole
    Logic Gate
    1.8V
    1
    8
    MDIP
    DC
    30ns
    50 mA
    5000 Vrms
    -
    -
    10ns
    -
    6N137
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