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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Logic Output Optocouplers SSO6 3.3V 10MB
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ON Semiconductor 1603
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AUD 0.9429
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FODM3053R2_NF098


Optotriac; 3.75kV; triac; Mini-flat 4pin; Channels:1; 1kV/µs
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ON Semiconductor 1582
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AUD 1.012
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CNY17F-2X009


Transistor Output Optocouplers Phototransistor Out Single CTR 63-125%
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Vishay 1538
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AUD 0.3803
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AT3082-CuH-DE


100mA 60mA 800V 1.23V Two-way thyristor DIP-6 Triac, SCR Output Optoisolators ROHS
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AOTE 1537
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AUD 0.1545
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SFH615A-3X018T


Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Single CTR>100-200%
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Vishay 1536
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AUD 0.4809
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14230134500


Triac & SCR Output Optocouplers WL-OCTR Optocoupler Triac NZC / WEM30x SOP4 250V 5mA NZC
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Wurth 1530
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AUD 0.737
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CNY64


Transistor Output Optocouplers Phototransistor Out
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Vishay 1523
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AUD 1.3844
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TLP292-4(V4GBTPE


Transistor Output Optocouplers 4ch Transistor opto coupler
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Toshiba 1504
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AUD 1.4491
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LDA111STR


Transistor Output Optocouplers Optocoupler Single-Transistor
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IXYS 1491
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AUD 1.6029
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VOT8123AD-V


Triac & SCR Output Optocouplers Non-Zero 800V Vrdm DIP6; 5000V Vrms
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Vishay 85
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AUD 0.4714
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