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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TCMT1105


Transistor Output Optocouplers Phototransistor Out
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Vishay 4612
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AUD 0.2867
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LTV-824S-TA1


Transistor Output Optocouplers Optocoupler
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Lite-On 4596
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AUD 0.394
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ATM3052-CuH-SE


100mA 60mA 600V 1.23V Two-way thyristor SOP-4 Triac, SCR Output Optoisolators ROHS
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AOTE 4591
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AUD 0.1688
Multiples of: 5

4N26S


Optoisolator Transistor with Base Output 1500Vrms 1 Channel 6-SMD
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Lite-On 4589
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AUD 0.1642
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SFH615A-3X007


Transistor Output Optocouplers Phototransistor Out Single CTR>100-200%
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Vishay 4586
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AUD 0.4187
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TLX9300(TPL,F


Transistor Output Optocouplers Transistor Coupler Automotive; AEC-Q101
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Toshiba 4586
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AUD 2.3921
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VOM618A-X001T


Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out CTR 50-600% 1mA VDE
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Vishay 4584
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AUD 0.22
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EL851


Transistor Output Optocouplers Photo Transistor Thru-Hole
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Everlight 4573
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AUD 0.2476
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EL827


Transistor Output Optocouplers Optocoupler Dual Ch Transistor DC Input
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Everlight 4559
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AUD 0.1902
Multiples of: 5

LTV-817S-C


Transistor Output Optocouplers Optocoupler 50% 5kv 4Pin SMT
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Lite-On 4546
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AUD 0.1713
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