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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Triac & SCR Output Optocouplers WL-OCTR Optocoupler Triac NZC / WE30x DIP 6 SL-Type 400V 15mA NZC
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Wurth 873
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AUD 1.0511
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RV1S2285ACCSP-10YC#SC0


Photocoupler with 8.2mm Creepage 5000Vrms 4-Pin SSOP Surface Mount
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Renesas 873
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AUD 1.2413
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FOD3184SDV


Fairchild Semiconductor Logic Output Optocouplers 3A Out, Hi-Speed Gate Drvr Optocouplr
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ON Semiconductor 873
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AUD 2.0778
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FOD3184TSV


Fairchild Semiconductor Logic Output Optocouplers 3A Out, Hi-Speed Gate Drvr Optocouplr
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ON Semiconductor 872
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AUD 2.2698
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EL3H7(TA)-VG


Everlight Transistor Output Optocouplers 50-600CTR 3750Vrms -55 to 110 Op Temp
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Everlight 870
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AUD 0.2844
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IL4108-X009T


Vishay Semiconductors Triac & SCR Output Optocouplers Phototriac Output Zero Crossing
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Vishay 870
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AUD 1.4369
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H11A1SM


Transistor Output Optocouplers Optocoupler Phototransistor
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ON Semiconductor 865
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AUD 0.316
Multiples of: 1

FOD260LSD


Fairchild Semiconductor High Speed Optocouplers 10 Mbits S-CH 3.3V LG Output Optocoup
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ON Semiconductor 865
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AUD 1.6744
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4N32TVM


Transistor Output Optocouplers Photodarlington
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ON Semiconductor 862
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AUD 0.4068
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FOD3150TV


Fairchild Semiconductor Logic Output Optocouplers DC-In 1-Ch Optocoupl Logic-Out
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ON Semiconductor 862
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AUD 1.4264
Multiples of: 1

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