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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ACPL-339J-000E


Avago Technologies High Speed Optocouplers Marquise Plastic Optocoupler
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Broadcom 9
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AUD 10.1314
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ACPL-217-50BE


Transistor Output Optocouplers 3000Vrms 130-260%CTR
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Broadcom 8
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AUD 0.5579
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LTV-851


Transistor Output Optocouplers Optocoupler Phototransistor
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Lite-On 7
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AUD 0.3049
Multiples of: 1

LDA203


Transistor Output Optocouplers Optocoupler Single-Transistor
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IXYS 7
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AUD 0.7344
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RV1S2211ACCSP-10YC#SC0


Photocoupler with 8.2mm Creepage Distance 5000Vrms 4-Pin SSOP Surface Mount
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Renesas 7
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AUD 1.2519
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HCPL-2231-300E


High Speed Optocouplers 5MBd 2Ch 1.8mA
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Broadcom 7
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AUD 10.8733
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PVI5033RPBF


Photodiode Output Optocouplers 2 Form A Photo Voltaic Isolator
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Infineon 7
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AUD 11.5762
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LTV-817M-A


Optocoupler; THT; Channels:1; Out: transistor; Uinsul:5kV; Uce:35V
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Lite-On 6
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AUD 0.1492
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K30102C TLD


SMD-4 Optocouplers - Phototransistor Output ROHS
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Cosmo 6
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AUD 0.189
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4N28M


Transistor Output Optocouplers PTR 20%, 0.5KV
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Lite-On 5
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AUD 0.1816
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