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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TLP627-4(F)


Transistor Output Optocouplers DARL. 4 CH Vceo=300V MIN
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Toshiba 56
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AUD 4.7957
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OPI210


Optocoupler DC-IN 1-CH Transistor DC-OUT 4-Pin Mini-SMD
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TT Electronics 56
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AUD 12.0137
Multiples of: 1

ACPL-C78A-000E


Optically Isolated Amplifiers 5000 Vrms 10 kHz
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Broadcom 56
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AUD 29.5778
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OLS249


OPTOISO 1.5KV TRANS W/BASE SMT
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Skyworks 56
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AUD 157.7181
Multiples of: 1

ISP621-4X


Optocoupler; THT; Channels:4; Out: transistor; Uinsul:5.3kV; DIP16
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Isocom 55
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AUD 1.1242
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SFH6916T


SSOP-16 Transistor, Photovoltaic Output Optoisolators ROHS
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Vishay 55
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AUD 3.2586
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HCPL-3180-300E


High Speed Optocouplers 2.0A IGBT Gate Drive
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Broadcom 55
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AUD 4.4
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HCPL-2300-300E


High Speed Optocouplers 8MBd 1Ch 4mA
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Broadcom 55
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AUD 8.3556
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K30101C


DIP-4 Optocouplers - Phototransistor Output ROHS
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Cosmo 54
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AUD 0.0612
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ACPL-M50L-500E


High Speed Optocouplers Low Drive Opto
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Broadcom 54
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AUD 1.0008
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