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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6N139-X019T


Vishay Semiconductors High Speed Optocouplers 100kbd High-Speed Trans Out CTR>500%
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Vishay 689
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AUD 1.2623
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FOD8316R2


Fairchild Semiconductor Logic Output Optocouplers 2.5A Out IGBT Drive Optocoupler
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ON Semiconductor 689
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AUD 5.878
Multiples of: 1

FOD8316


Logic Output Opto-couplers 2.5A Output Current IGBT DriveOptocouplr
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ON Semiconductor 688
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AUD 5.1159
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SFH617A-3X016


Transistor Output Optocouplers RECOMMENDED ALT 78-VO617A-3X016
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Vishay 687
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AUD 0.42
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CNY17F-1X019


Transistor Output Optocouplers Phototransistor Out Single CTR 40-80%
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Vishay 685
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AUD 0.4808
Multiples of: 1

MOC8204M


Transistor Output Optocouplers Hi Volt Phototrans
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ON Semiconductor 684
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AUD 1.2844
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IL4108-X007


Triac & SCR Output Optocouplers Phototriac Output Zero Crossing
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Vishay 684
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AUD 2.2555
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VOS617A-4X001T


Transistor Output Optocouplers CTR 160-320% 5mA
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Vishay 680
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AUD 0.2863
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SFH600-1


Transistor Output Optocouplers Phototransistor Out Single CTR 63-125%
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Vishay 680
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AUD 0.5448
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Hot SFH1690AT


Transistor Output Optocouplers Phototransistor Out Single CTR > 50-150%
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Vishay 601
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AUD 0.2511
Multiples of: 1

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