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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VO617A-4


Transistor Output Optocouplers RECOMMENDED ALT 782-SFH617A-4
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Vishay 4074
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AUD 0.1729
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4N35


Optocouplers DIP-6 RoHS
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Everlight 4074
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AUD 0.1446
Multiples of: 5

6N137-560E


Avago Technologies High Speed Optocouplers 10 Mbs 3750Vrms
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Broadcom 4073
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AUD 0.8625
Multiples of: 1

VOS617A-9X001T


Vishay Semiconductors Transistor Output Optocouplers CTR 200-400% 5mA
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Vishay 4065
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AUD 0.2706
Multiples of: 1

VOM617A-2T


Transistor Output Optocouplers Phototransistor Out CTR 63-125% 5mA
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Vishay 4063
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AUD 0.2043
Multiples of: 1

ELM3052


SOP-4-2.54mm Optocouplers - Thyristor Signal Output ROHS
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Everlight 4044
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AUD 0.2994
Multiples of: 5

VO3053


Triac & SCR Output Optocouplers Non-Zero Crossing Photo Triac
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Vishay 4017
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AUD 0.5797
Multiples of: 1

VOS615A-1T


Transistor Output Optocouplers CPLR
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Vishay 3990
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AUD 0.2514
Multiples of: 1

MOC3083SR2VM


Triac & SCR Output Optocouplers 6Pin800V Optocoupler Zero Cross Triac Dr
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ON Semiconductor 3988
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AUD 0.5937
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MOC8021M


Transistor Output Optocouplers Photodarlington
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ON Semiconductor 3986
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AUD 0.3851
Multiples of: 1

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