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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CNY17-4X009


Transistor Output Optocouplers Phototransistor Out Single CTR 160-320%
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Vishay 1783
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AUD 0.3579
Multiples of: 1

ACPL-C784-500E


Avago Technologies Optically Isolated Amplifiers 5000 Vrms 10 kHz
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Broadcom 1782
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AUD 2.4135
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MOCD217R2VM


Transistor Output Optocouplers 8-Pin Optocoupler LC 2Ch Phototrans
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ON Semiconductor 1781
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AUD 0.4679
Multiples of: 1

ACPL-W61L-000E


High Speed Optocouplers 10MBd Optocoupler
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Broadcom 1780
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AUD 3.8375
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CNY17-2X007


Transistor Output Optocouplers Phototransistor Out Single CTR 63-125%
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Vishay 1779
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AUD 0.3498
Multiples of: 1

HCPL-0314-500E


High Speed Optocouplers 1Ch 8mA 400mW
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Broadcom 1778
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AUD 1.3086
Multiples of: 1

CNY17-3X001


Transistor Output Optocouplers Phototransistor Out Single CTR 100-200%
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Vishay 1777
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AUD 0.3632
Multiples of: 1

ILD621GB-X007T


Transistor Output Optocouplers Phototransistor Out Dual CTR > 100%
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Vishay 1777
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AUD 1.4335
Multiples of: 1

EL817DS


5kV 50mA 200mV@1mA,20mA 1 6V 1.2V DC SMD-4P Transistor, Photovoltaic Output Optoisolators ROHS
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AOTE 1775
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AUD 0.0538
Multiples of: 10

FOD8384R2


Fairchild Semiconductor Logic Output Optocouplers
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ON Semiconductor 1770
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AUD 4.5921
Multiples of: 1

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