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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APT1232AX


Triac & SCR Output Optocouplers APT Phototriac
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Panasonic 1940
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AUD 1.3818
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IL4118-X007


Triac & SCR Output Optocouplers Phototriac Output, Zero Crossing
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Vishay 1940
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AUD 3.7603
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H11N1SR2M


High Speed Optocouplers Optocoupler LC Schmitt Trigger
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ON Semiconductor 1940
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AUD 5.6862
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FOD817D300


Transistor Output Optocouplers Phototransistor Output
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ON Semiconductor 1938
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AUD 0.1776
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VOM618A-7X001T


Transistor Output Optocouplers Phototransistor Out CTR 80-160% 1mA VDE
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Vishay 1938
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AUD 0.2593
Multiples of: 1

VO615A-7X007T


Transistor Output Optocouplers Optocplr 80-160% CTR 5mA SMD-4
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Vishay 1934
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AUD 0.165
Multiples of: 1

FOD852300W


Optocoupler; THT; Channels:1; Out: Darlington; 5kV; DIP4
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ON Semiconductor 1841
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AUD 0.4746
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TLP293-4(TP,E


Transistor Output Optocouplers 4ch Transistor opto coupler
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Toshiba 1810
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AUD 1.194
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FOD8383


Fairchild Semiconductor Logic Output Optocouplers
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ON Semiconductor 1305
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AUD 4.3371
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FOD2741BSD


Optocoupler; SMD; Channels:1; Out: transistor; Uinsul:5kV; Uce:70V
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ON Semiconductor 161
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AUD 1.0293
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