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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Hot MOC3020SM


Triac & SCR Output Optocouplers SO-6 NON-ZERO TRIAC
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ON Semiconductor 1160
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AUD 0.3842
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CNY17F-2X001


Transistor Output Optocouplers Phototransistor Out Single CTR 63-125%
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Vishay 1156
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AUD 0.3809
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AT815-CuH-D


5kV 60mA 1V@1mA,1mA 1 6V 1.1V DC DIP-4 Transistor, Photovoltaic Output Optoisolators ROHS
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AOTE 1154
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AUD 0.13
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PC123Y23FP9F


Transistor Output Optocouplers Photocoupler
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Sharp 1149
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AUD 0.1797
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ELS3120P(TA)-VG


SOP-6-6.8mm Optocouplers - Logic Output ROHS
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Everlight 1132
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AUD 0.8648
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CNY17-3M


Optocoupler; THT; Channels:1; Out: transistor; Uinsul:5kV; Uce:70V
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Lite-On 961
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AUD 0.2006
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4N38


Transistor Output Optocouplers Phototransistor Out
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Vishay 840
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AUD 0.4472
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LTV816D-S


Optocouplers SOP-4 RoHS
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Youtai 688
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AUD 0.0494
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ACPL-C87BT-500E


Avago Technologies Optically Isolated Amplifiers Precision Iso-Amp
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Broadcom 609
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AUD 3.431
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LTV-817A


Transistor Output Optocouplers Optocoupler Phototrans
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Lite-On 261
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AUD 0.0504
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