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 5253
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AUD 0.2118
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4N35-X017T


Transistor Output Optocouplers Phototransistor Out Single CTR>100%
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Vishay 1178
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AUD 0.4285
Multiples of: 1

TLP352(LF1,F)


Toshiba Logic Output Optocouplers Gate Drive Coupler
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Toshiba 211
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AUD 1.1887
Multiples of: 1

FODM1007R2


Transistor Output Optocouplers PHOTOTRANSISTOR OUTPUT
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ON Semiconductor 211
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AUD 0.1425
Multiples of: 1

TIL111XSM


Optocoupler; SMD; Channels:1; Out: transistor; Uinsul:5.3kV
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Isocom 210
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AUD 0.1776
Multiples of: 1

OPI1290-080


Logic Output Optocouplers Optical Interrupter
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TT Electronics 210
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AUD 10.6881
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IS660XSM


Optocoupler; SMD; Channels:1; Out: Darlington; Uinsul:5.3kV
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Isocom 209
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AUD 1.0364
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ATH11L2-CuH-S


15V 7kV DC SMD-6P Logic Output Optoisolators ROHS
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AOTE 194
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AUD 0.3061
Multiples of: 5

MOC3022SM


SOP-6-6.5mm Optocouplers - Thyristor Signal Output ROHS
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Youtai 184
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AUD 0.1805
Multiples of: 5

TLP293-4(LGBTR,E


Transistor Output Optocouplers 4ch Transistor opto coupler
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Toshiba 0
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AUD 1.0713
Multiples of: 1

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