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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FOD4118SV


Fairchild Semiconductor Triac & SCR Output Optocouplers Zero-Cross Triac Out Snubberless, 800V
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ON Semiconductor 912
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AUD 3.2127
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14230636301


Triac & SCR Output Optocouplers WL-OCTR Optocoupler Triac ZC / WE30x DIP 6 SL-Type 600V 5mA ZC
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Wurth 911
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AUD 0.88
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FOD3125S


Logic Output Optocouplers HighTemp 2.5A Output Gate Drive Opto
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ON Semiconductor 911
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AUD 4.0577
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FOD2741BS


Transistor Output Optocouplers Error amplifier Optocoupler
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ON Semiconductor 909
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AUD 1.1235
Multiples of: 1

ACPL-W483-500E


Logic Output Opto-couplers IPM Inverting
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Broadcom 904
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AUD 1.9744
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CT3023(S)(T1)


Triac Optocouplers SOP-6 RoHS
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CT Micro International 870
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AUD 0.1866
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MOC3083SM


Triac & SCR Output Optocouplers 6Pin800V Optocoupler Zero Cross Triac Dr
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ON Semiconductor 744
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AUD 0.5319
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HCPL-2601-000E


High Speed Optocouplers 10MBd 1Ch 5mA
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Broadcom 517
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AUD 1.3184
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HCPL-7840-300E


Optocoupler; SMD; Channels:1; Out: isolation amplifier; 3.75kV
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Broadcom 327
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AUD 8.2746
Multiples of: 1

IL410-X007T


Triac & SCR Output Optocouplers Phototriac Output, Zero Crossing
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Vishay 34
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AUD 2.3149
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