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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4N25VM


Transistor Output Optocouplers Optocoupler Phototransistor
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ON Semiconductor 795
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AUD 0.3607
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IL300-DEFG-X017T


High Linearity Optocouplers Single Linear, High Gain, Wide Bandwidth
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Vishay 795
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AUD 3.656
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IS660XSM


Optocoupler; SMD; Channels:1; Out: Darlington; Uinsul:5.3kV
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Isocom 793
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AUD 1.0244
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4N26TVM


Fairchild Semiconductor Transistor Output Optocouplers Optocoupler Phototransistor
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ON Semiconductor 790
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AUD 0.3633
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TCLT1012


Transistor Output Optocouplers Phototransistor 63-125% CTR 10mA
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Vishay 790
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AUD 0.4725
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CTT2223


Triac Optocouplers DIP-7 RoHS
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CT Micro International 790
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AUD 0.637
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VO615A-5X009T


Transistor Output Optocouplers H.Temp Phototrnstr 50-150% CTR
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Vishay 789
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AUD 0.1935
Multiples of: 1

IL4218-X001


Triac & SCR Output Optocouplers Phototriac Output Low Input Current
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Vishay 785
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AUD 3.719
Multiples of: 1

CNY17G-2


Transistor Output Optocouplers Phototransistor Out Dual CTR 63-125%
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Vishay 783
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AUD 0.2933
Multiples of: 1

4N28SM


Optocoupler; SMD; Channels:1; Out: transistor; Uinsul:7.5kV
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ON Semiconductor 465
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AUD 0.4333
Multiples of: 1

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