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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FOD8314T


Logic Output Opto-couplers 1.0A Output Gate Driver Optocoupler
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ON Semiconductor 2224
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AUD 1.1567
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FOD053LR2


Fairchild Semiconductor High Speed Optocouplers 1Mbits HS Dual Channel Tran-1kVus
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ON Semiconductor 2219
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AUD 1.251
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ACPL-K342-000E


Logic Output Opto-couplers Optocoupler
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Broadcom 2215
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AUD 6.0444
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4N35


DIP-6 Optocouplers - Phototransistor Output ROHS
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Youtai 2211
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AUD 0.1167
Multiples of: 5

MOC3021M


100mA 60mA 400V 1.15V Two-way thyristor DIP-6 Triac, SCR Output Optoisolators ROHS
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AOTE 2211
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AUD 0.1453
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4N35M


Optocoupler; THT; Channels:1; Out: transistor; Uinsul:3.55kV; DIP6
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Lite-On 2210
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AUD 0.1593
Multiples of: 1

TLP293(Y-TPL,E


Toshiba Transistor Output Optocouplers X36 PBF Transistor Optocoupler AC 125C
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Toshiba 2201
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AUD 0.2756
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PS2561D-1Y-A


Optocoupler DC-IN 1-CH Transistor DC-OUT 4-Pin PDIP Magazine
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Renesas 2197
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AUD 0.4072
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LTV-5341-TP1


SMD-5 Optocouplers - Logic Output ROHS
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Lite-On 2197
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AUD 0.5184
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FOD3120TSR2V


Logic Output Optocouplers High Noise Immunity 2.5A Out Gate
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ON Semiconductor 2194
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AUD 1.5086
Multiples of: 1

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