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 SFH6186-3X001T


Transistor Output Optocouplers Phototransistor Out Single CTR>100-200%
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Vishay 1062
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AUD 0.4573
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ELW4503S(TA)(YB)-V


SOP-8 Optocouplers - Phototransistor Output ROHS
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Everlight 425
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AUD 0.7365
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SLH11L1S


SOP-6-2.54mm Optocouplers - Logic Output ROHS
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SLKORMICRO 423
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AUD 0.4227
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FODM8061R2


High Speed Optocouplers Hi Noise Immunity 5V 10M/sec Logic Gt Out
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ON Semiconductor 423
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AUD 2.1112
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SFH617A-2


Transistor Output Optocouplers RECOMMENDED ALT 78-VO617A-2
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Vishay 421
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AUD 0.2881
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TLP266J(TPL,E(T


70mA 50mA 600V 1.27V Two-way thyristor SOP-4-2.54mm Triac, SCR Output Optoisolators ROHS
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Toshiba 419
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AUD 2.6728
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MOC3082S


800V Two-way thyristor SMD Optocouplers - Thyristor Signal Output ROHS
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GUOXIN JIAPIN SEMICONDUCTOR 417
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AUD 0.2251
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MOCD207M


Optocoupler; SMD; Channels:2; Out: transistor; Uinsul:5.3kV; SO8
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ON Semiconductor 417
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AUD 0.4824
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HCPL2531SVM


Fairchild Semiconductor High Speed Optocouplers
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ON Semiconductor 416
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AUD 1.3577
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6N137-300E


High Speed Optocouplers 10 Mb/s 3750Vrms
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Broadcom 355
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AUD 1.38
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