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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Transistor Output Optocouplers Phototransistor Out Single CTR 50-300%
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Vishay 1679
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AUD 4.5549
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TCDT1102


Transistor Output Optocouplers Phototransistor Out
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AUD 0.3119
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AT827-CuH-D


5kV 60mA 200mV@1mA,20mA 2 6V 1.4V DC DIP-8 Transistor, Photovoltaic Output Optoisolators ROHS
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AUD 0.2494
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Optoisolator Transistor Output 4170Vrms 1 Channel 6-SMD
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ON Semiconductor 1060
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AUD 0.3349
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IL223AT


Transistor Output Optocouplers Photodarlington Out Single CTR >500%
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AUD 0.3554
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Optocouplers SOP-4_P2.54_300mil RoHS
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Cosmo 1018
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TLP291(GR,SE(T


Optocoupler DC-IN 1-CH Transistor DC-OUT 4-Pin SO T/R
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AUD 0.4573
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ACPL-P314-560E


Avago Technologies Logic Output Optocouplers 0.6A IGBT Gate Drive
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Broadcom 744
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AUD 0.8511
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Transistor Output Optocouplers Phototransistor Out Single CTR 63-125%
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AUD 1.5276
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TLP183(GR-TPL.E(T


Optocoupler; SMD; Ch: 1; OUT: transistor; Uinsul: 3.75kV; Uce: 80V
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AUD 0.3448
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