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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4N35-X007T


Transistor Output Optocouplers Phototransistor Out Single CTR>100%
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Vishay 5346
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AUD 0.3513
Multiples of: 1

PS2501-2


Optocouplers DIP-8 RoHS
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Isocom 5335
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AUD 0.4406
Multiples of: 50

VOM618A-3X001T


Transistor Output Optocouplers Phototransistor 100-200% CTR 1mA VDE
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Vishay 5325
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AUD 0.2132
Multiples of: 1

IL420-X007T


Triac & SCR Output Optocouplers Phototriac Output Low Input Current
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Vishay 5310
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AUD 2.3149
Multiples of: 1

TCMT1119


Transistor Output Optocouplers Phototransistor 200-400% CTR 5mA VDE
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Vishay 5283
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AUD 0.3143
Multiples of: 1

MOC216R2M


Transistor Output Optocouplers 8-Pin Optocoupler Phototransistor
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ON Semiconductor 5282
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AUD 0.33
Multiples of: 1

4N33M


Optocoupler; THT; Channels:1; Out: Darlington; Uinsul:2.5kV; DIP6
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ON Semiconductor 5282
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AUD 0.4039
Multiples of: 1

CNY17-4


Optoisolator Transistor with Base Output 5000Vrms 1 Channel 6-DIP
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Lite-On 5156
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AUD 0.1658
Multiples of: 1

PS2501-4-A


Transistor Output Optocouplers Hi-Iso Photo 4-Ch
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CEL 5018
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AUD 1.4087
Multiples of: 1

TCLD1000


Transistor Output Optocouplers Photodarlington Out Single CTR >600%
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Vishay 3233
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AUD 0.3513
Multiples of: 1

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