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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4N37S


Optoisolator Transistor with Base Output 1500Vrms 1 Channel 6-SMD
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Lite-On 4956
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AUD 0.1785
Multiples of: 1

4N26M


Transistor Output Optocouplers PTR 20%, 2.5KV
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Lite-On 4947
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AUD 0.1781
Multiples of: 1

SFH610A-3


Transistor Output Optocouplers RECOMMENDED ALT 78-VO610A-3
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Vishay 4946
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AUD 0.5849
Multiples of: 1

ACPL-W340-500E


Logic Output Opto-couplers Gate Drive Opto
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Broadcom 4937
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AUD 0.891
Multiples of: 1

MOC3022SR2M


Triac & SCR Output Optocouplers 6Pin 400V Optocoupl Rand Phs Triac Drvr
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ON Semiconductor 4936
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AUD 0.4278
Multiples of: 1

MOC3051M


Triac & SCR Output Optocouplers DIP-6 OPTO TRIAC
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ON Semiconductor 4929
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AUD 0.5411
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VOS617A-9T


Vishay Semiconductors Transistor Output Optocouplers CTR 130-260% 5mA
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Vishay 4916
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AUD 0.2514
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PS2561D-1Y-V-A


Transistor Output Optocouplers Optocoupler 4-pin DIP
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Renesas 4914
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AUD 0.4388
Multiples of: 1

TLP785(BL,F)


Toshiba Transistor Output Optocouplers Photo-IC 60mA 80V 5000 Vrms 8000 Vpk
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Toshiba 4898
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AUD 0.2105
Multiples of: 5

SFH690BT


Transistor Output Optocouplers Phototransistor Out Single CTR 100-300%
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Vishay 4893
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AUD 0.3221
Multiples of: 5

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