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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6N137-L


Optocouplers DIP-8 RoHS
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Lite-On 5908
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AUD 0.489
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VO206AT


Vishay Semiconductors Transistor Output Optocouplers Optocoupler SOIC8
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Vishay 1632
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AUD 0.4154
Multiples of: 1

TLP781(GR-TP6,F)


Toshiba Transistor Output Optocouplers Transistor Coupler CTR=100-300% BVS=5kV
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Toshiba 1629
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AUD 0.1933
Multiples of: 5

HCPL0637


High Speed Optocouplers 100B Logic Dual Ch Hi Perform Optocuplr
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ON Semiconductor 1628
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AUD 2.7582
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ILQ31


Transistor Output Optocouplers Photodarlington Out Quad CTR >200%
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Vishay 1627
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AUD 2.8841
Multiples of: 1

Hot SFH601-2


Transistor Output Optocouplers Phototransistor Out Single CTR 63-125%
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Vishay 1626
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AUD 0.5579
Multiples of: 1

SFH620AA


Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Single CTR 50-600%
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Vishay 1624
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AUD 0.4943
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LTV-846


Optocoupler; THT; Channels:4; Out: transistor; Uinsul:5kV; Uce:80V
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Lite-On 1620
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AUD 0.5336
Multiples of: 1

HCPL0639R2


High Speed Optocouplers 100B Logic Dual Ch Hi Perform Optocuplr
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ON Semiconductor 1617
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AUD 1.6238
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APV1121S


Photodiode Output Optocouplers 2500VAC 8.7V DRIVER
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Panasonic 1617
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AUD 1.6784
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