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-5


Transistor Output Optocouplers DIP-4 OPTOCPL 50-150% CTR -E3
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Vishay 3467
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AUD 0.1729
Multiples of: 1

FOD2712A


Transistor Output Optocouplers Isolated Error Amp Optocoupler
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ON Semiconductor 3466
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AUD 0.7758
Multiples of: 1

FOD817BS


Transistor Output Optocouplers TRANSISTOR OUTPUT SMD LEAD BEND
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ON Semiconductor 3453
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AUD 0.1985
Multiples of: 1

SFH690BT3


Transistor Output Optocouplers Phototransistor 100-300% CTR
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Vishay 3451
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AUD 0.4161
Multiples of: 1

TCLT1109


Transistor Output Optocouplers Phototransistor Out Single CTR 200-400%
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Vishay 3450
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AUD 0.3258
Multiples of: 1

MOCD223M


Optocoupler; SMD; Channels:1; Out: transistor; Uinsul:2.5kV; SO8
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ON Semiconductor 3443
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AUD 0.4851
Multiples of: 1

SFH1617A-3


Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Single CTR>100-200%
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Vishay 3435
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AUD 0.5184
Multiples of: 1

FODM3083


Triac & SCR Output Optocouplers 800V Zero Crossing
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ON Semiconductor 3433
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AUD 1.4352
Multiples of: 1

AT814A-CuH-S


5kV 50mA 200mV@1mA,20mA 1 6V 1.2V DC SMD-4P Transistor, Photovoltaic Output Optoisolators ROHS
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AOTE 3428
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AUD 0.1014
Multiples of: 5

H11D1SR2VM


Optoisolator Transistor with Base Output 4170Vrms 1 Channel 6-SMD
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ON Semiconductor 3428
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AUD 0.5418
Multiples of: 1

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