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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EL3051


Triac & SCR Output Optocouplers 600PBV 5000Vrms -55 to +100 Op Temp
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Everlight 24
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AUD 0.576
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HCPL-181-06AE


Optoisolator Transistor Output 3750Vrms 1 Channel 4-Mini-Flat
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Broadcom 24
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AUD 0.688
Multiples of: 1

6N139-000E


High Speed Optocouplers 100 KBd 2500Vrms
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Broadcom 24
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AUD 1.84
Multiples of: 1

ACNW3190-300E


Logic Output Opto-couplers 5.0A IGBT Gate Drive
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Broadcom 24
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AUD 5.74
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4N25-X009T


Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Single CTR>20%
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Vishay 23
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AUD 0.3756
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FOD3120S


Logic Output Optocouplers Optocoupl Logic-Out Push-Pul DC-In 1-Ch
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ON Semiconductor 23
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AUD 1.1754
Multiples of: 1

ACPL-7970-000E


Optocoupler; THT; Out: isolation amplifier; Uinsul:5kV; Uce:500mV
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Broadcom 23
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AUD 5.58
Multiples of: 1

ACPL-C78A-000E


Optically Isolated Amplifiers 5000 Vrms 10 kHz
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Broadcom 23
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AUD 26.8
Multiples of: 1

CNY17-4M


Optocoupler; THT; Channels:1; Out: transistor; Uinsul:5kV; Uce:70V
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Lite-On 22
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AUD 0.2169
Multiples of: 1

FODM121C


Transistor Output Optocouplers Full pitch MFP PhotoTrans Ouput
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ON Semiconductor 12
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AUD 0.3001
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