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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CPC1943GS


IXYS Integrated Circuits Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch
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IXYS 2
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AUD 17.8866
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3N244


Optek TT Electronics Transistor Output Optocouplers Isolator
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TT Electronics 2
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AUD 35.6955
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300680


High Speed Optocouplers 3.0V - 5.5V 15MBd
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TE Connectivity 2
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AUD 109.6642
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OPI155


Logic Output Optoisolator 5Mbps Open Collector, Schottky Clamped 50000VDC 1 Channel CMTI
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TT Electronics 2
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AUD 120.7537
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OPI150TX


Photointerrupter Transmissive Phototransistor 5-Pin
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TT Electronics 2
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AUD 186.5485
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VOL628A


Transistor Output Optocouplers Optcplor 50-600% CTR 1mA 4-pin LSOP
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Vishay 1
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AUD 0.3965
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H11L3TVM


Logic Output Optocouplers Optocoupler Schmitt Trigger
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ON Semiconductor 1
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AUD 0.5057
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HCPL2631SDV


Fairchild Semiconductor High Speed Optocouplers 2Ch 10MBits Optocpl Logic Gate Output
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ON Semiconductor 1
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AUD 3.0476
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PVI5080NSPBF


Photodiode Output Optocouplers 1 Form A Photo Voltaic Isolator
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Infineon 1
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AUD 4.1164
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FOD4118S


Triac & SCR Output Optocouplers Zero-Cross Triac Out Snubberless, 800V
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ON Semiconductor 1
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AUD 4.0721
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