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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PC123X2YFZ1B


Transistor Output Optocouplers Optoisolator Transistor Output 5000Vrms 1 Channel
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Sharp 3873
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AUD 0.3251
Multiples of: 1

HCNW4503-500E


High Speed Optocouplers 1Ch 16mA 700mW
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Broadcom 3020
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AUD 2.6367
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SFH615A-4X017T


Transistor Output Optocouplers RECOMMENDED ALT 78-VO615A-4X017T
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Vishay 1590
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AUD 0.3576
Multiples of: 5

FOD8320


Logic Output Opto-couplers High Noise ImmunIty 2.5A Out Gate Drive
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ON Semiconductor 1571
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AUD 4.18
Multiples of: 1

FOD4118SDV


Fairchild Semiconductor Triac & SCR Output Optocouplers Black Pkg Zero Cross Snubless Triac Drver
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ON Semiconductor 1564
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AUD 3.4414
Multiples of: 1

ILD610-1


Transistor Output Optocouplers Phototrnstr Dual Ch 40-80% CTR
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Vishay 1559
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AUD 1.5827
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SFH615A-4


Transistor Output Optocouplers RECOMMENDED ALT 78-VO615A-4
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Vishay 1558
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AUD 0.2977
Multiples of: 1

APV2121S


Photodiode Output Optocouplers Driver 4-pin SOP Driver 4-pin SOP
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Panasonic 1555
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AUD 1.3824
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EL8171S1(TU)-G


Transistor Output Optocouplers
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Everlight 1493
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AUD 0.1161
Multiples of: 5

4N37-X007


Transistor Output Optocouplers Phototransistor Out Single CTR>100%
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Vishay 0
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AUD 0.3331
Multiples of: 1

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