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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TCMT1118


Transistor Output Optocouplers Phototransistor 130-260% CTR 5mA VDE
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AUD 0.3116
Multiples of: 1

ISP814SMTR


Optocouplers SMD-4 RoHS
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AUD 0.3121
Multiples of: 1

K814P


Transistor Output Optocouplers Phototransistor Out Single CTR >20%
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AUD 0.3121
Multiples of: 1

TLP291(GB.E(O


Transistor Output Optocouplers
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AUD 0.3123
Multiples of: 1

TLP291(GB,SE


Toshiba Transistor Output Optocouplers Gen Purp 1-Circuit 50mA 80V 3750Vrms
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AUD 0.3133
Multiples of: 1

H11L1S


3V~15V DC SMD-6P Logic Output Optoisolators ROHS
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AUD 0.3137
Multiples of: 5

4N27M


DIP-6 Transistor Output Optocoupler ROHS
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AUD 0.3139
Multiples of: 5

4N37SMT&R


SMD-6P Transistor Output Optocoupler ROHS
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AUD 0.3142
Multiples of: 5

VO618A-4X009T


Optocoupler; SMD; Ch: 1; OUT: transistor; Uinsul: 5.3kV; Uce: 80V
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AUD 0.3145
Multiples of: 1

TLP291(TP,E)


Transistor Output Optocouplers Photo-IC 50mA IF 3750 Vrms 80V VCEO
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AUD 0.315
Multiples of: 2500

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