About Optocouplers / Photocouplers

Optocouplers / Photocouplers

Optocouplers are a type of isolator that use a low-power optical signal to transmit one signal from one circuit to another independent circuit. Optocouplers are comprised of an infrared LED light source and an integrated photo detector which usually consists of a photodiode and detector circuit. This optical link or coupling provides electrical isolation between the two circuits which makes the trouble shooting and reliability of circuits more straightforward. These devices are often used to provide electrical isolation between digital signals on the same board, but they are also commonly used in medical and industrial instruments, motor control systems, and signal conditioning circuits. Optocouplers have very high input-to-output isolation voltage and low capacitance, which makes them suitable for signal transmission in high speed applications. Additionally, they manage the call back current of the circuit they are connecting, allowing them to protect against overloads.
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FOD4218S


Triac & SCR Output Optocouplers Random Phase Triac Snubberless
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor Availability : 1521
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USD 2.852

Multiples of: 1

LTV-330J-TP1


SMD Optocouplers - Phototransistor Output ROHS
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Lite-On Availability : 1517
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USD 1.5889

Multiples of: 1

SFH618A-5


Transistor Output Optocouplers Phototransistor Out Single CTR 250-500%
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Vishay Availability : 1516
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USD 0.3369

Multiples of: 1563

ISP817XSM


Optocoupler; SMD; Channels:1; Out: transistor; Uinsul:5.3kV
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Isocom Availability : 1514
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USD 0.308

Multiples of: 1

FODM1007R2


Transistor Output Optocouplers PHOTOTRANSISTOR OUTPUT
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor Availability : 1511
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USD 0.1779

Multiples of: 1

PS2806-4-A


Transistor Output Optocouplers Optocoupler 16-pin SSOP
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Renesas Availability : 1510
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USD 3.887

Multiples of: 1

TLP293-4(LGBTR,E


Transistor Output Optocouplers 4ch Transistor opto coupler
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Toshiba Availability : 1508
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USD 0.6874

Multiples of: 1

MOC3041SM


Triac & SCR Output Optocouplers SO-6 ZERO TRIAC
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor Availability : 1506
Ship by Thu. 13 Nov to Mon. 17 Nov Calender.png

USD 0.3212

Multiples of: 1

TLP785F(D4GRT7,F(C


SOP-4 Transistor, Photovoltaic Output Optoisolators ROHS
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Toshiba Availability : 1504
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USD 0.112

Multiples of: 5

AT3083-CuH-DE


100mA 60mA 800V 1.23V Two-way thyristor DIP-6 Triac, SCR Output Optoisolators ROHS
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

AOTE Availability : 1503
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USD 0.115

Multiples of: 5

AT6N137-CuH-S


10Mbit/s 100us 5.5V 10kV/us DC SMD-8P Logic Output Optoisolators ROHS
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

AOTE Availability : 1503
Ship by Mon. 17 Nov to Fri. 21 Nov Calender.png

USD 0.2051

Multiples of: 5

4N36-X009


Transistor Output Optocouplers Phototransistor Out Single CTR>100%
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Vishay Availability : 1503
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USD 0.2387

Multiples of: 1

CNY173SR2VM


Transistor Output Optocouplers Optocoupler Hi Bvceo Phototransistor
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor Availability : 1500
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USD 0.2409

Multiples of: 1

AT3020-CuH-DE


100mA 60mA 400V 1.23V Two-way thyristor DIP-6 Triac, SCR Output Optoisolators ROHS
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

AOTE Availability : 1498
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USD 0.0969

Multiples of: 5

4N25S


Optocoupler; SMD; Channels:1; Out: transistor; Uinsul:1.5kV
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Lite-On Availability : 1498
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USD 0.11

Multiples of: 1

HCPL-0452-500E


High Speed Optocouplers 1MBd 1Ch 16mA
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Broadcom Availability : 1496
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USD 1.2712

Multiples of: 1

HCPL-7840-500E


Optically Isolated Amplifiers 4.5 - 5.5 SV 8 dB
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Broadcom Availability : 1491
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USD 1.4892

Multiples of: 1

SFH6345-X016


High Speed Optocouplers 1Mbd High-Speed Trans Out CTR>30%
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Vishay Availability : 1489
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USD 0.8512

Multiples of: 1

EL817S1(B)(TU)


Transistor Output Optocouplers Optocoupler Transistor DC Input
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Everlight Availability : 1488
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USD 0.067

Multiples of: 5

AT3062-CuH-SE


100mA 60mA 600V 1.3V Two-way thyristor SMD-6P Triac, SCR Output Optoisolators ROHS
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

AOTE Availability : 1488
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USD 0.1467

Multiples of: 5

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