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 6Pin800V Optocoupler Zero Cross Triac Dr
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ON Semiconductor 475
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AUD 0.9946
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FOD4216SV


Fairchild Semiconductor Triac & SCR Output Optocouplers Random Phase Triac Snubberless
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ON Semiconductor 370
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AUD 3.1738
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AT816D-FEH-S


5kV 50mA 400mV@1mA,1mA 1 1.2V DC SMD-4P Transistor, Photovoltaic Output Optoisolators ROHS
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AOTE 368
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AUD 0.0531
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SFH6286-4T


Transistor Output Optocouplers Phototransistor Out Single CTR 160-500%
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Vishay 368
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AUD 0.6778
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14230214010


Triac & SCR Output Optocouplers WL-OCTR Optocoupler Triac NZC / WE30x-4L DIP 4 Standard 400V 15mA NZC
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Wurth 368
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AUD 0.7595
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4N25-000E


Transistor Output Optocouplers 2500 Vrms 80mA
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Broadcom 366
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AUD 0.6511
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CNY17F-4X009


Transistor Output Optocouplers Phototransistor Out Single CTR 160-320%
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Vishay 364
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AUD 0.3962
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6N137M


1Mbit/s 4.5V~18V 1kV/us DC DIP-8 Logic Output Optoisolators ROHS
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AOTE 363
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AUD 0.2709
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HCNW4503-300E


High Speed Optocouplers 1Ch 16mA 700mW
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Broadcom 353
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AUD 3
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PC817C


70V 5000V 50mA 0.1V@1mA,20mA 1 6V 1.2V DC SOP-4-2.54mm Optocouplers - Phototransistor Output ROHS
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SLKORMICRO 261
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AUD 0.0351
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