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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Hot MOC3061M


Optotriac; 5.3kV; Uout:600V; zero voltage crossing driver; DIP6
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ON Semiconductor 2024
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AUD 0.4589
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EL816S2(X)(TU)(WS)


SMD-4P Transistor, Photovoltaic Output Optoisolators ROHS
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Everlight 1726
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AUD 0.0808
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IL222AT


Transistor Output Optocouplers Photodarlington Out Single CTR >200%
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Vishay 1726
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AUD 0.7516
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EL814


Transistor Output Optocouplers 20-300CTR 5000Vrms -55 to +110 Op Temp
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Everlight 1726
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AUD 0.098
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MCT623SD


Fairchild Semiconductor Transistor Output Optocouplers
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ON Semiconductor 1723
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AUD 0.759
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UPC817XG-D04-T


35V 5000V 50mA 0.1V@1mA,20mA 1 6V 1.2V DC DIP-4 Optocouplers - Phototransistor Output ROHS
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Unisonic 1721
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AUD 0.071
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4N25TVM


Transistor Output Optocouplers Optocoupler Phototransistor
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ON Semiconductor 1721
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AUD 0.4399
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MOC3043SM


SOP-6-6.5mm Optocouplers - Thyristor Signal Output ROHS
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Youtai 1697
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AUD 0.1607
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ACPL-W50L-500E


Avago Technologies High Speed Optocouplers 1MBd 15000Vus
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Broadcom 1528
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AUD 1.6107
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FOD3150ASD


Logic Output Opto-couplers 8PW 2.5A GD T&R
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ON Semiconductor 1453
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AUD 0.7753
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