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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FOD2742BR2


Transistor Output Optocouplers Error amplifier Optocoupler
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ON Semiconductor 6836
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AUD 0.7763
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PC451J00000F


Optoisolator Transistor Output 3750Vrms 1 Channel 4-Mini-Flat
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Sharp 6761
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AUD 1.034
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MOC3063SR2M


Triac & SCR Output Optocouplers 6Pin600V Optocoupler Zero Cross Triac Dr
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ON Semiconductor 6741
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AUD 0.5198
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PS2801C-1-A


Transistor Output Optocouplers SNGL Tr DC Couplr
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CEL 6734
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AUD 1.6394
Multiples of: 1

LTV-817X-C


DIP Optocouplers DIP-4 RoHS
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Lite-On 6625
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AUD 0.0482
Multiples of: 10

PS2561DL-1Y-F3-A


CEL Transistor Output Optocouplers BV=5000Vr.m.s 1 Channel
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CEL 5557
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AUD 0.462
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MCT9001


Optocoupler; THT; Channels:2; Out: transistor; Uinsul:5kV; Uce:55V
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ON Semiconductor 2667
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AUD 0.3548
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FODM217B


Transistor Output Optocouplers 4 PIN TRANSISTOR OUTPUT MFP
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ON Semiconductor 1828
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AUD 0.54
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4N35-X009T


Transistor Output Optocouplers Phototransistor Out Single CTR >100%
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Vishay 870
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AUD 0.3441
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MOC3033SM


Triac & SCR Output Optocouplers SO-6 ZERO TRIAC
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ON Semiconductor 57
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AUD 0.5091
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