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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SFH620A-1


Transistor Output Optocouplers Phototransistor Out Single CTR 40-125%
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Vishay 3043
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AUD 0.1457
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4N28TVM


Fairchild Semiconductor Transistor Output Optocouplers Optocoupler Phototransistor
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ON Semiconductor 1868
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AUD 0.4874
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FOD4216SD


Fairchild Semiconductor Triac & SCR Output Optocouplers Random Phase Triac Snubberless
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ON Semiconductor 1868
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AUD 2.5771
Multiples of: 1

VOH1016AB-T


High Speed Optocouplers 1MBps Schmitt-Trigr SMD-6
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Vishay 1861
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AUD 0.5867
Multiples of: 1

K825P


Transistor Output Optocouplers Photodarlington Out Dual CTR > 600%
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Vishay 1849
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AUD 0.5599
Multiples of: 1

ILD74-X009T


Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Dual CTR > 12.5%
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Vishay 1844
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AUD 1.2019
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FOD260LSV


Fairchild Semiconductor High Speed Optocouplers
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ON Semiconductor 1843
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AUD 1.9238
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MOC3032M


Optotriac; 7.5kV; triac; DIP6; Channels:1; 2kV/µs
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ON Semiconductor 1841
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AUD 0.4344
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H11L1S-TA1-L


SOP-4 Optocouplers - Logic Output ROHS
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Lite-On 1799
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AUD 0.4874
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LTV-224


Optocouplers SO-8_4.4mm RoHS
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Lite-On 1494
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AUD 0.7304
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