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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IL420-X007T


Triac & SCR Output Optocouplers Phototriac Output Low Input Current
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Vishay 4913
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AUD 2.4955
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TLP292-4(TP,E


Toshiba Transistor Output Optocouplers 4ch Transistor opto coupler
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Toshiba 3545
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AUD 1.1711
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VOM618A-2T


Transistor Output Optocouplers Phototransistor Out CTR 63-125% 1mA
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Vishay 2013
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AUD 0.2355
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6N139M


High Speed Optocouplers Darlington 100KBd Transistor Output
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Lite-On 2013
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AUD 0.3957
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SFH6319T


High Speed Optocouplers 100kbd Low Input Current High Gain
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Vishay 2002
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AUD 1.0664
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FOD420SD


Triac & SCR Output Optocouplers Random Phase Triac Snubberless
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ON Semiconductor 1675
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AUD 3.1114
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VO2611-X007T


High Speed Optocouplers 10Mbd High-Speed Single CTR>300%
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Vishay 1400
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AUD 1.4219
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HMHAA280


Transistor Output Optocouplers aCinput Optocoupler Phototransistor
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ON Semiconductor 630
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AUD 0.5423
Multiples of: 1

AT6N139-CuH-S


60us 18V 10kV/us DC SMD-8 Logic Output Optoisolators ROHS
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AOTE 548
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AUD 0.4482
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HCPL-817-30DE


Transistor Output Optocouplers 5000 Vrms 50mA
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Broadcom 451
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AUD 0.5496
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