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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SFH610A-1


Transistor Output Optocouplers RECOMMENDED ALT 78-VO610A-1
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Vishay 2890
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AUD 0.3991
Multiples of: 1

FODM3022R2_NF098


Fairchild Semiconductor Triac & SCR Output Optocouplers 400V Random Phase Triac Driver 10mA
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ON Semiconductor 2888
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AUD 0.8189
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FOD8163TR2


Logic Output Opto-couplers 3.3V/5V Logic Gate Optocoupler
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ON Semiconductor 2888
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AUD 2.0125
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FODM121V


Fairchild Semiconductor Transistor Output Optocouplers
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ON Semiconductor 2887
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AUD 0.4582
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KPS28050ETLD


Optocouplers SOP-4 RoHS
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Cosmo 2885
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AUD 0.2934
Multiples of: 5

VOL628A-2T


Transistor Output Optocouplers AC Input Phtotrnstr 63-125% CTR
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Vishay 2885
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AUD 0.4154
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Hot SFH6186-4T


Transistor Output Optocouplers Phototransistor Out Single CTR 160-320%
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Vishay 2884
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AUD 0.4367
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CNY65ABST


Transistor Output Optocouplers PHOTOTRANSISTOR OUT CTR 80-240%
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Vishay 2884
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AUD 2.0358
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TLP292(E(T


Transistor Output Optocouplers
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Toshiba 2883
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AUD 0.3804
Multiples of: 2973

CNY75C


Transistor Output Optocouplers Phototransistor Out Single CTR 160-320%
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Vishay 2878
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AUD 0.2906
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