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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CNY17-3X017T


Transistor Output Optocouplers Phototransistor Out Single CTR 100-200%
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Vishay 3942
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AUD 0.44
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SFH1690CT


Transistor Output Optocouplers Phototransistor Out Single CTR>100-200%
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Vishay 2024
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AUD 0.4334
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FOD4218V


Fairchild Semiconductor Triac & SCR Output Optocouplers Random Phase Triac Snubberless
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ON Semiconductor 84
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AUD 4.7429
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NTE3044


Optocoupler DC-IN 1-CH Darlington DC-OUT 6-Pin PDIP
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NTE 82
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AUD 3.0278
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TLP108(F)


High Speed Optocouplers IC3 STATE OUTPUT
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Toshiba 82
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AUD 4.4528
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ICPL2601


Optocouplers DIP-8 RoHS
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Isocom 81
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AUD 0.9045
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TLP4026G(F)


Toshiba MOSFET Output Optocouplers Photorelay Voff=350V Ion=0.12A
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Toshiba 73
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AUD 7.5385
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MOC3023TVM


Triac & SCR Output Optocouplers 6Pin 400V Optocoupl Rand Phs Triac Drvr
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ON Semiconductor 71
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AUD 0.3842
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FOD2741ASDV


Transistor Output Optocouplers Error amplifier Optocoupler
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ON Semiconductor 70
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AUD 1.21
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TLP4590A(D4,F


MOSFET Output Optocouplers
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Toshiba 24
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AUD 3.4642
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