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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Hot SFH6186-3X001T


Transistor Output Optocouplers Phototransistor Out Single CTR>100-200%
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Vishay 412
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AUD 0.38
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CYTLP1019(B-TP)


80V 5000V -55℃~+110℃ 4us@2mA,100Ω 3us@2mA,100Ω 50mA 0.1V@1mA,20mA 1 6V 1.2V Phototransistor DC SOP-4 Optocouplers - Phototransistor Output ROHS
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OCIC 412
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AUD 0.0683
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FOD3180TV


Logic Output Opto-couplers 2A IGBT/FET GTE DRV OPTOCOUPLER
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ON Semiconductor 411
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AUD 2.2
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ACPL-M21L-000E


Logic Output Optoisolator 5MBd Push-Pull, Totem Pole 3750Vrms 1 Channel 25kV/µs CMTI 5-SO
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Broadcom 411
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AUD 2.5493
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CPC1972G


IXYS Integrated Circuits Triac & SCR Output Optocouplers 250V Single Pole SIP Power Relay
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IXYS 411
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AUD 2.8567
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HCPL-0731-000E


High Speed Optocouplers 100kBd 2Ch 0.5mA
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Broadcom 410
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AUD 5.284
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HCPL2531SVM


Fairchild Semiconductor High Speed Optocouplers
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ON Semiconductor 409
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AUD 1.361
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LTV-206


Lite-On Transistor Output Optocouplers SO8 63-125% 3.75KV 2CH Optocoupler
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Lite-On 298
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AUD 0.6518
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TLP250(F)


Logic Output Opto-couplers RECOMMENDED ALT 757-TLP250HF
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Toshiba 282
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AUD 4.0111
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6N137SVM


Fairchild Semiconductor High Speed Optocouplers 10MBits Logic Gate Hi-Speed Optocoupler
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ON Semiconductor 172
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AUD 0.9096
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