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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ILQ621


Transistor Output Optocouplers Phototransistor Out Quad CTR >50%
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Vishay 1009
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AUD 1.6889
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IS623XSM


Optotriac; 5.3kV; Uout:600V; zero voltage crossing driver
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Isocom 1008
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AUD 0.72
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TLP5751H(TP4,E


Logic Output Opto-couplers GATE DRIVE COUPLER
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Toshiba 1008
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AUD 1.2381
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IL300-F-X017T


Optocoupler DC-IN 1-CH Linear Photovoltaic DC-OUT 8-Pin PDIP-8A SMD T/R
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Vishay 1008
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AUD 9.3063
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CNY17-1X007T


Transistor Output Optocouplers Phototransistor Out Single CTR 40-80%
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Vishay 1006
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AUD 0.4068
Multiples of: 1

H11G2SM


Transistor Output Optocouplers Hi Volt Photodarling
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ON Semiconductor 1004
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AUD 0.5805
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VO3120-X001


Logic Output Opto-couplers IGBT MOSFET Driver 2.5A
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Vishay 1004
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AUD 1.1314
Multiples of: 1

SFH6186-4


Transistor Output Optocouplers Phototransistor Out Single CTR 160-320%
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Vishay 1003
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AUD 0.4644
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Hot H11F1SR2M


MOSFET Output Optocouplers FET Bilateral analog
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ON Semiconductor 1000
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AUD 0.9394
Multiples of: 1

VO615A-3X019T


Vishay Semiconductors Transistor Output Optocouplers Optocoupler SMD4
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Vishay 998
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AUD 0.1729
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