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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4N33VM


Transistor Output Optocouplers Photodarlington
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ON Semiconductor 522
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AUD 0.5787
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SFH6345-X009T


High Speed Optocouplers 1Mbd High-Speed Trans Out CTR>30%
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Vishay 521
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AUD 1.2444
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MOC3043SVM


Triac & SCR Output Optocouplers 6Pin400V Optocoupler Zero Cross Triac Dr
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ON Semiconductor 519
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AUD 0.6113
Multiples of: 1

ELS680P(TA)-VG


SOP-6-6.8mm Optocouplers - Logic Output ROHS
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Everlight 519
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AUD 1.1562
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CPC5903G


Logic Output Optocouplers Dual Opto Isolated I2C Bus Repeater
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IXYS 519
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AUD 4.25
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MOC3010VM


Triac & SCR Output Optocouplers 6Pin 250V Optocoupl Rand Phs Triac Drvr
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ON Semiconductor 518
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AUD 0.4418
Multiples of: 1

VO4258M-X007T


Triac & SCR Output Optocouplers Non Zero Cross Photo Triac 800V 3mA
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Vishay 518
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AUD 2.6923
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ACPL-244-500E


Transistor Output Optocouplers AC Phototx Coupler
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Broadcom 517
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AUD 1.407
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APV1122


Photodiode Output Optocouplers 5000VAC 8.7V DRIVER
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Panasonic 516
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AUD 2.9333
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HMHA2801BR2


Fairchild Semiconductor Transistor Output Optocouplers Optocoupler Phototransistor
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ON Semiconductor 515
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AUD 0.351
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