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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AT075L-CuH-S


15Mbit/s 80us 5.5V 15kV/us DC SOP-8 Logic Output Optoisolators ROHS
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AOTE 534
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AUD 1.2589
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TLP293-4(4LGBTPE


Toshiba Transistor Output Optocouplers 4ch Transistor opto coupler
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Toshiba 534
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AUD 1.2887
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CPC1976YX6


IXYS Integrated Circuits Triac & SCR Output Optocouplers AC SS Power Switch Dual Power SCR Out
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IXYS 534
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AUD 7.8729
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ACPL-7900-000E


Optically Isolated Amplifiers Precision Iso-Amp
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Broadcom 529
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AUD 9.66
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TIL199


Optocoupler; THT; Channels:4; Out: Darlington; Uinsul:5.3kV; DIP16
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Isocom 525
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AUD 1.38
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FOD3184TSV


Fairchild Semiconductor Logic Output Optocouplers 3A Out, Hi-Speed Gate Drvr Optocouplr
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ON Semiconductor 525
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AUD 2.1214
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4N27


Optoisolator Transistor with Base Output 5000Vrms 1 Channel 6-DIP
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Vishay 524
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AUD 0.3127
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HCPL-053L-500E


Optoisolator Transistor Output 3750Vrms 2 Channel 8-SO
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Broadcom 524
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AUD 2.6554
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4N33VM


Transistor Output Optocouplers Photodarlington
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ON Semiconductor 522
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AUD 0.5787
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ACPL-796H-500E


SOP-16-300mil Logic Output Optoisolators ROHS
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Broadcom 522
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AUD 1.4086
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