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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SFH6156-3T


Transistor Output Optocouplers Phototransistor Out Single CTR 100-200%
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Vishay 141620
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AUD 0.2254
Multiples of: 1000

TLP2362(TPL,E(T


Optocouplers SOP-5 RoHS
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Toshiba 15415
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AUD 0.4416
Multiples of: 1

ELM3064(TA)


Triac & SCR Output Optocouplers Triac Driver SMD (Zero-Crossing)
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Everlight 11812
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AUD 0.405
Multiples of: 1

VO610A-3X007T


Transistor Output Optocouplers RECOMMENDED ALT 782-SFH610A-3X007T
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Vishay 11779
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AUD 0.1973
Multiples of: 1

PC451J00000F


Optoisolator Transistor Output 3750Vrms 1 Channel 4-Mini-Flat
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Sharp 11745
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AUD 1.1489
Multiples of: 1

PS2703-1-F3-A


Transistor Output Optocouplers Hi-Iso Photo 1-Ch
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CEL 11730
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AUD 0.529
Multiples of: 1

PC357N2J0000C


SOP-4 Transistor, Photovoltaic Output Optoisolators ROHS
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Sharp 11640
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AUD 0.0994
Multiples of: 5

MOC223M


Optocoupler; SMD; Channels:1; Out: Darlington; 2.5kV; SO8
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ON Semiconductor 11640
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AUD 0.3671
Multiples of: 3000

KB817-B


Transistor Output Optocouplers
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Kingbright 11640
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AUD 0.7
Multiples of: 1

VOS627A-X001T


Transistor Output Optocouplers CTR 50-600% 5MA
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Vishay 10774
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AUD 0.3737
Multiples of: 1

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