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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TLP293(GB.E(T


Transistor Output Optocouplers
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Toshiba 3709
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AUD 0.4422
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6N139M


High Speed Optocouplers 1-Ch Low Input Curr Hi Gain Optocoupler
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ON Semiconductor 3705
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AUD 0.9647
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VO205AT


Transistor Output Optocouplers Optocoupler SOIC8
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Vishay 3697
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AUD 0.3405
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FODM8801B


Transistor Output Optocouplers OptoHiT Phototrans 75V 1-Ch CTR 260%
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ON Semiconductor 3687
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AUD 0.8784
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SFH618A-3X001


Transistor Output Optocouplers Phototransistor Out Single CTR>100-200%
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Vishay 3686
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AUD 0.6431
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VO615A-9X016


Transistor Output Optocouplers H.Temp Phototrnstr 200-400% CTR, VDE
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Vishay 3684
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AUD 0.1833
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FOD4208TV


Fairchild Semiconductor Triac & SCR Output Optocouplers Random Phase Triac Snubberless
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ON Semiconductor 3684
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AUD 3.1944
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ILD205T


Transistor Output Optocouplers Phototransistor Out Dual CTR 40-80%
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Vishay 3568
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AUD 0.6896
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6N137S


10Mbit/s 75ns,75ns DC SOP-8-2.54mm Optocouplers - Logic Output ROHS
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SLKORMICRO 2949
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AUD 0.4455
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SFH6156-3


Transistor Output Optocouplers Phototransistor Out Single CTR 100-200%
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Vishay 2458
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AUD 0.3009
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