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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VOS618A-3T


Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out CTR 100-200% IF=1MA
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Vishay 11946
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AUD 0.266
Multiples of: 1

SFH628A-3X017T


Transistor Output Optocouplers Phototransistor Out AC-In CTR>100-320%
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Vishay 11819
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AUD 0.8638
Multiples of: 1

VO610A-3X007T


Transistor Output Optocouplers RECOMMENDED ALT 782-SFH610A-3X007T
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Vishay 11779
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AUD 0.1973
Multiples of: 1

6N137


High Speed Optocouplers 10Mbd Open Collector Single Channel
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Vishay 11751
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AUD 0.9966
Multiples of: 1

PC451J00000F


Optoisolator Transistor Output 3750Vrms 1 Channel 4-Mini-Flat
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Sharp 11745
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AUD 1.1489
Multiples of: 1

PS2703-1-F3-A


Transistor Output Optocouplers Hi-Iso Photo 1-Ch
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CEL 11730
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AUD 0.529
Multiples of: 1

PC357N4J000F


Transistor Output Optocouplers 300-600% CTR ranked PC357NJ0000F
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Sharp 11669
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AUD 0.1523
Multiples of: 5

FOD8012A


High Speed Optocouplers Bi-Direct High Speed Logic Gate Optocoupl
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ON Semiconductor 11642
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AUD 4.9646
Multiples of: 3000

KB817-B


Transistor Output Optocouplers
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Kingbright 11640
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AUD 0.7
Multiples of: 1

TCMT1109


Transistor Output Optocouplers Phototransistor Out
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Vishay 5820
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AUD 0.2761
Multiples of: 3000

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