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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VO615A-2X007T


Transistor Output Optocouplers H.Temp Phototrnstr 63-125 % CTR
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Vishay 1978
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AUD 0.1855
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SFH6186-5T


Transistor Output Optocouplers Phototransistor Out Single CTR 250-500%
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Vishay 1853
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AUD 0.4681
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HMHA2801BR2


Fairchild Semiconductor Transistor Output Optocouplers Optocoupler Phototransistor
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ON Semiconductor 42
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AUD 0.3546
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FOD3182TV


Fairchild Semiconductor High Speed Optocouplers High Speed 3A OUT MOSFET Gate Driver
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ON Semiconductor 40
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AUD 2.373
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NTE3223-4


OPTOCOUPLER QUAD NPN TRANS
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NTE 38
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AUD 4.2345
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FOD8320R2


Logic Output Opto-couplers Low Power Two-Input Logic Gate TinyLogic
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ON Semiconductor 36
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AUD 4.3672
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6N138


High Speed Optocouplers Low Input, High Gain DC Input
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Everlight 31
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AUD 0.8734
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OPI126


High Speed Optocouplers Optoisolator
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TT Electronics 21
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AUD 17.994
Multiples of: 1

PS2933-1-AX


CEL Transistor Output Optocouplers Hi Col-Emit 1-Ch
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CEL 0
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AUD 1.9005
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APT1232W


Triac & SCR Output Optocouplers APT Phototriac
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Panasonic 0
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AUD 0.9258
Multiples of: 1

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