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 LTV-M601


Lite-On High Speed Optocouplers SOP-5 High Speed Phototranistr Output
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Lite-On 12381
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AUD 0.5194
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FODM3052R2_NF098


Optotriac; 3.75kV; triac; Mini-flat 4pin; Channels:1; 1kV/µs
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ON Semiconductor 8482
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AUD 0.913
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GP1S195HCPSF


5V@5mA 1 DC SOP-4 Transistor Output Optocoupler ROHS
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Sharp 8463
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AUD 0.3577
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EL452(TA)-G


Optocouplers SOP-4 RoHS
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Everlight 8443
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AUD 0.2727
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VOL618A-3T


Transistor Output Optocouplers Phototransistor Out CTR 100-320% IF=1MA
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Vishay 8433
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AUD 0.2656
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PS2733-1-F3-A


Transistor Output Optocouplers Hi Col-Emit Dar 1-Ch
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Renesas 8364
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AUD 1.0104
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ACPL-217-500E


Transistor Output Optocouplers 3000Vrms 50% CTR
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Broadcom 7645
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AUD 0.3071
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OR-354B


Optocouplers SMD-4 RoHS
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Orient 6552
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AUD 0.0866
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EL357N-G


Transistor Output Optocouplers 50-600CTR 3750Vrms -55 to +100 Op Temp
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Everlight 5791
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AUD 0.1886
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CNY17-3


Transistor Output Optocouplers NPN Phototransistor
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Vishay 4228
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AUD 0.2743
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