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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PS2561F-1Y-A


Optocoupler DC-IN 1-CH Transistor DC-OUT 4-Pin DIP Magazine
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Renesas 3346
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AUD 0.4726
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CNY17F2VM


Fairchild Semiconductor Transistor Output Optocouplers Optocoupler Phototrans No Base
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ON Semiconductor 2910
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AUD 0.277
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TLP183(BL,E(T


SOIC-4 Transistor, Photovoltaic Output Optoisolators ROHS
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Toshiba 1483
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AUD 0.4282
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FOD8332R2


Logic Output Optocouplers 2.5A gate driver w/ desat/active mille
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ON Semiconductor 669
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AUD 4.8104
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ACPL-847-000E


Transistor Output Optocouplers 5000 Vrms 50% CTR
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Broadcom 668
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AUD 1.3582
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CNY172SM


Transistor Output Optocouplers Optocoupler Hi Bvceo Phototransistor
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ON Semiconductor 665
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AUD 0.3021
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FOD4108V


Fairchild Semiconductor Triac & SCR Output Optocouplers Zero-Cross Triac Out Snubberless VDE 800V
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ON Semiconductor 665
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AUD 0.5713
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Hot SFH690AT


Transistor Output Optocouplers Phototransistor Out Single CTR 50-150%
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Vishay 608
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AUD 0.674
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HCPL-817-56BE


Transistor Output Optocouplers 5000 Vrms 50mA
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Broadcom 523
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AUD 0.3635
Multiples of: 5

TLP290-4(E(T


Optocoupler AC-IN 4-CH Transistor DC-OUT 16-Pin SO
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Toshiba 180
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AUD 1.5045
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