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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EL817S1(C)(TU)


Transistor Output Optocouplers Optocoupler Transistor DC Input
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Everlight 18449
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AUD 0.1283
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CNY171SR2M


Transistor Output Optocouplers Optocoupler Hi Bvceo Phototransistor
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ON Semiconductor 4651
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AUD 0.3394
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MCT6


Optocoupler; THT; Channels:2; Out: transistor; Uinsul:5.3kV; DIP8
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ON Semiconductor 4405
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AUD 0.3559
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VOM617A-9T


Transistor Output Optocouplers Phototransistor Out CTR 200-400% 5mA
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Vishay 4346
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AUD 0.1983
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HCPL-0453-500E


High Speed Optocouplers 1MBd 1Ch 16mA
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Broadcom 4008
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AUD 1.2279
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4N33M


Optocoupler; THT; Channels:1; Out: Darlington; Uinsul:2.5kV; DIP6
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ON Semiconductor 3969
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AUD 0.3116
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LTV-247-G-RT


SOP-16 Optocouplers - Phototransistor Output ROHS
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Lite-On 3678
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AUD 0.6166
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4N25M


Optocoupler; THT; Channels:1; Out: transistor; Uinsul:2.5kV; DIP6
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Lite-On 1971
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AUD 0.1715
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Hot SFH6916


Transistor Output Optocouplers Phototransistor Out Quad CTR 50-300%
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Vishay 242
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AUD 1.6956
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FOD2741AS


Transistor Output Optocouplers Error amplifier Optocoupler
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ON Semiconductor 0
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AUD 1.2204
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