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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OR-4N35S-TA1


Photovoltaic Output Optoisolators
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Orient 431
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AUD 0.1904
Multiples of: 5

H11G2


Optocoupler; THT; Channels:1; Out: Darlington; Uinsul:5.3kV; DIP6
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Isocom 430
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AUD 0.832
Multiples of: 1

4N29SR2M


Transistor Output Optocouplers Photodarlington
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ON Semiconductor 428
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AUD 0.5531
Multiples of: 1

HCPL4503TSR2VM


High Speed Optocouplers HI-SPEED TRANSISTOR 8-PIN, SMD, VDE
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ON Semiconductor 427
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AUD 1.1418
Multiples of: 1

APT1211S


Triac & SCR Output Optocouplers 50mA 600V TRIAC ZERO-CROSS
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Panasonic 427
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AUD 1.3839
Multiples of: 100

VO4661


High Speed Optocouplers 10Mbd Open Collector Dual Channel
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Vishay 427
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AUD 2.0114
Multiples of: 1

UPC817CG-D04-T


Optocouplers DIP-4 RoHS
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Unisonic 426
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AUD 0.0627
Multiples of: 10

TLP291(GR-TP,SE(T


Optocoupler; SMD; Ch: 1; OUT: transistor; Uinsul: 3.75kV; Uce: 80V
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Toshiba 426
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AUD 0.1182
Multiples of: 2

VOM618A-7T


Transistor Output Optocouplers Phototransistor Out CTR 80-160% 1mA
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Vishay 425
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AUD 0.2326
Multiples of: 1

SFH690AT


Transistor Output Optocouplers Phototransistor Out Single CTR 50-150%
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Vishay 0
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AUD 0.23
Multiples of: 2000

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