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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CNY64A


Transistor Output Optocouplers Phototransistor Out Single CTR 63-125%
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Vishay 1872
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AUD 1.5252
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CNY17-2X019


Transistor Output Optocouplers Phototransistor Out Single CTR 63-125%
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Vishay 1871
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AUD 0.4644
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HCPL-3120-000E


Logic Output Opto-couplers 2.0A IGBT Gate Drive
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Broadcom 1870
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AUD 3.2179
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4N28TVM


Fairchild Semiconductor Transistor Output Optocouplers Optocoupler Phototransistor
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ON Semiconductor 1868
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AUD 0.4874
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TLP290(GB,SE(T


Optocoupler AC-IN 1-CH Transistor DC-OUT 4-Pin SO T/R
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Toshiba 1867
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AUD 0.2937
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FOD8012AR2


High Speed Optocouplers Bi-Direct High Speed Logic Gate Optocoupl
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ON Semiconductor 1865
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AUD 8.9967
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ACPL-W346-500E


Logic Output Optocouplers OPTOCOUPLER GATE DRV TR+LF
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Broadcom 1864
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AUD 2.3582
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HCPL-3120-300E


Logic Output Opto-couplers 2.0A IGBT Gate Drive
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Broadcom 1864
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AUD 3.1662
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VO615A-3X008T


Transistor Output Optocouplers H.Temp Phototrnstr 100-200% CTR
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Vishay 1856
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AUD 0.1729
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FOD2743BTV


Fairchild Semiconductor Transistor Output Optocouplers Error Amp Coupler Transistor Output
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ON Semiconductor 1854
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AUD 1.3508
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