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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4N25-X009T


Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Single CTR>20%
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Vishay 10690
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AUD 0.3924
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LTV-356T-A


Transistor Output Optocouplers P/C LTV-356T BIN A (2.0) STD. TYPE
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Lite-On 10641
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AUD 0.1658
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FOD3120S


Logic Output Optocouplers Optocoupl Logic-Out Push-Pul DC-In 1-Ch
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ON Semiconductor 970
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AUD 1.4106
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CPC1303GR


Transistor Output Optocouplers Dual Optocoupler High-Voltage
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IXYS 194
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AUD 1.7761
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ACPL-7970-000E


Optocoupler; THT; Out: isolation amplifier; Uinsul:5kV; Uce:500mV
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Broadcom 23
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AUD 5.6836
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ACPL-C78A-000E


Optically Isolated Amplifiers 5000 Vrms 10 kHz
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Broadcom 23
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AUD 26.7463
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CNY17-4M


Optocoupler; THT; Channels:1; Out: transistor; Uinsul:5kV; Uce:70V
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Lite-On 22
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AUD 0.2216
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NTE3086


Optocoupler DC-IN 2-CH Transistor DC-OUT 8-Pin PDIP
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NTE 22
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AUD 4.8927
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ACPL-339J-000E


Avago Technologies High Speed Optocouplers Marquise Plastic Optocoupler
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Broadcom 21
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AUD 13.8955
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ACPL-P340-000E


Logic Output Opto-couplers Gate Drive Opto
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Broadcom 0
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AUD 5.24
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