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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Photodiode Output Optocouplers 1 Form A Photo Voltaic Isolator
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Infineon 285
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AUD 5.2209
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4N35-300E


Optoisolator Transistor with Base Output 3550Vrms 1 Channel 6-SMD
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Broadcom 285
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AUD 0.7794
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HCPL4503SVM


High Speed Optocouplers 1Mbps Single Chan Hi-Spd Transistor
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ON Semiconductor 284
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AUD 2.0962
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PD1201


IXYS Integrated Circuits Triac & SCR Output Optocouplers 400 BLOCKING VOLT 1.0 AMPS
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IXYS 283
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AUD 15.1701
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EL815


Transistor Output Optocouplers Photo-Coupler
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Everlight 282
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AUD 0.351
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AT4N30-CuH-S


100mA 5kV 1V@2mA,8mA 1 3V 1.3V DC SMD-6P Transistor, Photovoltaic Output Optoisolators ROHS
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AOTE 281
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AUD 0.2116
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TLP3121(F)


Toshiba MOSFET Output Optocouplers Photorelay Voff=80V Ion=0.35A Ron=1Ohm
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Toshiba 281
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AUD 8.8488
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HCPL2730SD


Fairchild Semiconductor High Speed Optocouplers Hi Gain Optocoupler LC Darlington 2Ch
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ON Semiconductor 276
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AUD 1.4952
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PS2833-1-A


Transistor Output Optocouplers Hi-Iso Col-Emit 1-Ch
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CEL 106
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AUD 2.1672
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AT4N31-CuH-D


100mA 5kV 1V@2mA,8mA 1 3V 1.3V DC DIP-6 Transistor, Photovoltaic Output Optoisolators ROHS
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AOTE 97
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AUD 0.1588
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