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-4X006


Transistor Output Optocouplers H. Relblty 5300 Vrms 160-320% CTR
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Vishay 2068
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AUD 0.1589
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PS2811-1-A


Transistor Output Optocouplers Hi CTR Lo-Input 1-Ch
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CEL 2062
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AUD 1.9032
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HTLP521GB-S


SMD-4P Transistor Output Optocoupler ROHS
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HXY MOS 2061
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AUD 0.144
Multiples of: 5

FOD8143S


Transistor Output Optocouplers OPTO_LIGHTING
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ON Semiconductor 2060
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AUD 0.2756
Multiples of: 1

MOC3031SM


Triac & SCR Output Optocouplers SO-6 ZERO TRIAC
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ON Semiconductor 2059
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AUD 0.5657
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TLP183(BL,E(T


SOIC-4 Transistor, Photovoltaic Output Optoisolators ROHS
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Toshiba 2059
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AUD 0.664
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EL817(C)


Transistor Output Optocouplers Optocoupler Transistor DC Input
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Everlight 2046
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AUD 0.0523
Multiples of: 10

PS2805C-4-F3


Optocouplers SO-16 RoHS
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Renesas 2046
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AUD 1.1927
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PS2503-1-A


Transistor Output Optocouplers Hi-Speed Switch 1-Ch
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CEL 2043
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AUD 0.8957
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LTV-816-C-CU


DIP-4 Optocouplers - Phototransistor Output ROHS
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Lite-On 2037
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AUD 0.0793
Multiples of: 10

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