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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HCPL-181-00DE


Optoisolator Transistor Output 3750Vrms 1 Channel 4-Mini-Flat
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Broadcom 21742
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AUD 0.2966
Multiples of: 5

LTV-244


Optocouplers SO-16_4.4mm RoHS
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Lite-On 11155
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AUD 0.7538
Multiples of: 1

TCET1113


Transistor Output Optocouplers Phototransistor Out Single CTR>100-200%
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Vishay 7756
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AUD 0.4255
Multiples of: 1

JANTX4N24A


Optocoupler DC-IN 1-CH Transistor With Base DC-OUT 6-Pin
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Micropac 7521
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AUD 53.8236
Multiples of: 1

Hot PS2801C-4-F3-A


Transistor Output Optocouplers Optocoupler 16-pin SSOP
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Renesas 6670
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AUD 0.8085
Multiples of: 1

PC817X2CSZ9F


Transistor Output Optocouplers Photocoupler
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Sharp 6576
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AUD 0.1661
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6N139


High Speed Optocouplers Darlington 100KBd Transistor Output
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Lite-On 5333
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AUD 0.3697
Multiples of: 1

FOD817B300


Optocoupler; THT; Channels:1; Out: transistor; Uinsul:5kV; Uce:70V
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ON Semiconductor 3880
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AUD 0.133
Multiples of: 1

CNY173TVM


Optocoupler DC-IN 1-CH Transistor With Base DC-OUT 6-Pin PDIP White Bulk
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ON Semiconductor 2692
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AUD 0.3176
Multiples of: 1

VOD223T


Vishay Semiconductors Transistor Output Optocouplers Optocoupler SOIC8
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Vishay 25
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AUD 0.7797
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