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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4N27M


Transistor Output Optocouplers PTR 20%, 1.5KV
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Lite-On 356
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AUD 0.1803
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EL3H4-G


Transistor Output Optocouplers Optocoupler
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Everlight 355
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AUD 0.2157
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VOT8024AB-T1


Triac & SCR Output Optocouplers PhotoTRIAC 800V ZC SMD4 90 deg
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Vishay 355
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AUD 0.5343
Multiples of: 1

MOC3061VM


Triac & SCR Output Optocouplers 6Pin600V Optocoupler Zero Cross Triac Dr
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ON Semiconductor 355
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AUD 0.6937
Multiples of: 1

SFH615A-2X009T


Transistor Output Optocouplers H. Relblty 5300 Vrms 63-125% CTR
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Vishay 355
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AUD 0.5097
Multiples of: 1

ACPL-W50L-500E


Avago Technologies High Speed Optocouplers 1MBd 15000Vus
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Broadcom 355
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AUD 2.37
Multiples of: 1

ISP620-2X


Optocoupler; THT; Channels:2; Out: transistor; Uinsul:5.3kV; DIP8
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Isocom 354
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AUD 0.7646
Multiples of: 1

HCPL0700R2


Fairchild Semiconductor High Speed Optocouplers Hi Gain Optocoupler 1Ch LC Darlington
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ON Semiconductor 353
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AUD 1.8619
Multiples of: 1

IL420-X009


Triac & SCR Output Optocouplers Phototriac Output, Low Input Current
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Vishay 352
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AUD 3.0295
Multiples of: 1

EL817S1(C)(TU)-FG


Optocouplers SMD RoHS
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Everlight 349
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AUD 0.0619
Multiples of: 10

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