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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MOC3082SR2M


Fairchild Semiconductor Triac & SCR Output Optocouplers 6Pin800V Optocoupler Zero Cross Triac Dr
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ON Semiconductor 1221
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AUD 0.8833
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VOS618A-2T


Transistor Output Optocouplers Phototransistor Out CTR 63-125% IF=1MA
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Vishay 1220
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AUD 0.2627
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MOC8106SR2VM


Optoisolator Transistor Output 4170Vrms 1 Channel 6-SMD
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ON Semiconductor 1219
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AUD 0.3697
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HCPL2730S


High Speed Optocouplers SO-8 DUAL PH DARL
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ON Semiconductor 1217
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AUD 2.7985
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CPC1302GSTR


Transistor Output Optocouplers Dual Optocoupler High-Voltage
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IXYS 1216
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AUD 2.2821
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CNY17F-2X017T


Transistor Output Optocouplers Phototransistor Out Single CTR 63-125%
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Vishay 1215
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AUD 0.4522
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PS2561-1-V-A


CEL Transistor Output Optocouplers SGL Tr DC BSI Couplr
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CEL 1213
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AUD 0.3579
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TLP385(E


Transistor Output Optocouplers GaAs Infrared and Photo-Transistor
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Toshiba 1210
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AUD 0.2543
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TLP2748(D4-TP,E(T


Optocouplers SO-6L RoHS
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Toshiba 1210
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AUD 0.7056
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ACPL-H312-000E


Avago Technologies Logic Output Optocouplers 2.5A IGBT Gate Drive
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Broadcom 1210
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AUD 3.5625
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