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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PC357N3J000F


Sharp Microelectronics Transistor Output Optocouplers 200-400% CTR ranked PC357NJ0000F
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Sharp 47219
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AUD 0.1489
Multiples of: 5

TLP351(F)


Logic Output Opto-couplers 3750Vrms 0.2 Low power
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Toshiba 4301
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AUD 0.7644
Multiples of: 1

CNY17F-3X017


Transistor Output Optocouplers Phototransistor Out Single CTR 100-200%
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Vishay 4298
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AUD 0.4161
Multiples of: 1

CNY173SM


Transistor Output Optocouplers Optocoupler Hi Bvceo Phototransistor
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ON Semiconductor 4290
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AUD 0.2899
Multiples of: 1

VOMA618A-3X001T


Transistor Output Optocouplers 80Vceo 3750Vrms SOP-4 CTR 100-200
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Vishay 4285
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AUD 1.327
Multiples of: 1

PS2815-1-A


Transistor Output Optocouplers Hi CTR AC Input 1-Ch
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CEL 4261
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AUD 2.6031
Multiples of: 1

MOC3020S


Optotriac; 5kV; Uout:400V; without zero voltage crossing driver
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Lite-On 4256
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AUD 0.3011
Multiples of: 1

H11L3SR2M


Logic Output Optocouplers Optocoupler Schmitt Trigger
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ON Semiconductor 4248
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AUD 0.573
Multiples of: 1

FODM3063


Optotriac; 3.75kV; triac; Mini-flat 4pin; Channels:1
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ON Semiconductor 4235
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AUD 0.6764
Multiples of: 1

6N137S


Logic Output Optoisolator 15MBd Open Collector 5000Vrms 1 Channel 10kV/µs CMTI 8-SMD
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Lite-On 3697
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AUD 0.4006
Multiples of: 1

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