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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CNY17-2X009


Transistor Output Optocouplers Phototransistor Out Single CTR 63-125%
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Vishay 1930
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AUD 0.3546
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CNY17F-2X016


Transistor Output Optocouplers Phototransistor Out Single CTR 63-125%
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Vishay 1930
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AUD 0.3672
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VO217AT


Vishay Semiconductors Transistor Output Optocouplers Optocoupler SOIC8
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Vishay 1930
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AUD 0.4635
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HMHA2801AV


Fairchild Semiconductor Transistor Output Optocouplers Optocoupler Phototransistor
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ON Semiconductor 1929
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AUD 0.3021
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IL4218-X017


Triac & SCR Output Optocouplers Phototriac Output Low Input Current
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Vishay 1926
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AUD 3.7421
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CNY173VM


Transistor Output Optocouplers Optocoupler Hi Bvceo Phototransistor
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ON Semiconductor 1917
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AUD 0.307
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EL3H7-G


Everlight Transistor Output Optocouplers 50-600CTR 3750Vrms -55 to 110 Op Temp
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Everlight 1907
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AUD 0.2424
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IL300-DEFG


High Linearity Optocouplers High Gain Wide Bandwidth Linear
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Vishay 1866
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AUD 2.6761
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TLP3556A(TP1,F


MOSFET Output Optocouplers Photorelay 2A 100V 2500Vrms 110pF
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Toshiba 1006
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AUD 3.3474
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IL755-2X007T


Transistor Output Optocouplers Photodarlington CTR>1000%
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Vishay 0
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AUD 1.8927
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