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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PS2565L-1-F3-A


CEL Transistor Output Optocouplers Hi-Iso AC Input 1-Ch
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CEL 56144
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AUD 0.8154
Multiples of: 1

PS2805C-4-F3-A


CEL Transistor Output Optocouplers Quad sgl TR AC Cplr
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CEL 55460
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AUD 1.9905
Multiples of: 1

VOM617A-7T


Transistor Output Optocouplers Phototransistor Out CTR 80-160% 5mA
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Vishay 55225
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AUD 0.2235
Multiples of: 1

EL3052


Triac & SCR Output Optocouplers 600PBV 5000Vrms -55 to +100 Op Temp
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Everlight 55115
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AUD 0.1905
Multiples of: 5

EL817M(C)-F


Optocouplers DIP-4 RoHS
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Everlight 54161
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AUD 0.0488
Multiples of: 10

ELQ3H7(TA)


Transistor Output Optocouplers Photo Transistor SMD
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Everlight 53054
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AUD 0.3681
Multiples of: 5

EL1019


Optocouplers LSOP-4 RoHS
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Youtai 52467
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AUD 0.068
Multiples of: 10

ELQ3H4(TA)-G


Optocouplers SOP-16_4.4mm RoHS
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Everlight 52287
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AUD 0.3143
Multiples of: 2

Hot MOC3021M


Triac & SCR Output Optocouplers DIP-6 NON-ZERO TRIAC
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ON Semiconductor 36195
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AUD 0.3066
Multiples of: 5

TLP291(GB-TP,SE


Transistor Output Optocouplers 50mA 80V Gen Purp 50mA 1 Circuit
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Toshiba 26126
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AUD 0.1196
Multiples of: 5

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