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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6N136


High Speed Optocouplers 1Mb High Speed DC Input
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Everlight 15327
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AUD 0.3953
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VO4258H-X007T


Triac & SCR Output Optocouplers Non Zero Cross Photo Triac 800V 2mA
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Vishay 15196
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AUD 3.1032
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VOS617A-3X001T


Transistor Output Optocouplers CTR 100-200% 5MA
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Vishay 15017
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AUD 0.243
Multiples of: 1

LTV-817S-TA


Optoisolator Transistor Output 5000Vrms 1 Channel 4-SMD
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Lite-On 14936
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AUD 0.1494
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TLP293(V4-GHTL.E(T


Optocoupler; SMD; Channels:1; Out: transistor; Uinsul:3.75kV; SO4
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Toshiba 14855
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AUD 0.4133
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FODM217BR2


Transistor Output Optocouplers 4 PIN TRANSISTOR OUTPUT MFP
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ON Semiconductor 14550
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AUD 0.2863
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4N25-X009T


Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Single CTR>20%
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Vishay 14534
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AUD 0.3737
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6N136S(TA)


Optocouplers SMD-8 RoHS
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Everlight 14405
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AUD 0.4768
Multiples of: 1

VOS617A-7X001T


Transistor Output Optocouplers CTR 80-160% 5mA
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Vishay 14374
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AUD 0.2348
Multiples of: 1

4N32SR2M


Transistor Output Optocouplers Optocoupler Photodarlington
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ON Semiconductor 14331
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AUD 0.394
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