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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HCPL-315J-500E


Logic Output Opto-couplers 0.5A IGBT Gate Drive
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Broadcom 76
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AUD 6.9481
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CPC1943G


IXYS Integrated Circuits Triac & SCR Output Optocouplers 400V, 500mA AC Power Switch
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IXYS 75
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AUD 10.0667
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ACPL-782T-000E


Optically Isolated Amplifiers 100kHz, 3750vrms 30ppm/C Gain Drift
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Broadcom 75
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AUD 11.6944
Multiples of: 1

FODM121C


Transistor Output Optocouplers Full pitch MFP PhotoTrans Ouput
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ON Semiconductor 74
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AUD 0.3021
Multiples of: 1

ACNW3190-300E


Logic Output Opto-couplers 5.0A IGBT Gate Drive
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Broadcom 74
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AUD 6.2444
Multiples of: 1

VO3063-X009T


Triac & SCR Output Optocouplers Phototriac ZC 1.5kVus 5mA VDE
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Vishay 73
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AUD 0.9985
Multiples of: 1

FOD4108SDV


Fairchild Semiconductor Triac & SCR Output Optocouplers Black Pkg Zero Cross Snubless Triac Drver
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ON Semiconductor 73
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AUD 3.0206
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TB5128FTG(CP,EL


New Quadratic Unclassified Data QFN-48 RoHS
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Toshiba 73
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AUD 4.1391
Multiples of: 1

MOC3021S


60mA 400V 1.15V Two-way thyristor SMD Optocouplers - Thyristor Signal Output ROHS
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GUOXIN JIAPIN SEMICONDUCTOR 72
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AUD 0.162
Multiples of: 5

SFH617A-1X006


Transistor Output Optocouplers Phototransistor Out Single CTR > 40-80%
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Vishay 72
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AUD 0.5535
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