About Optocouplers / Photocouplers

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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EL851S


5kV 60mA 400mV@1mA,20mA 1 6V 1.2V DC SMD-4P Transistor, Photovoltaic Output Optoisolators ROHS
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

AOTE Availability : 921
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USD 0.1218

Multiples of: 5

14230636301


Triac & SCR Output Optocouplers WL-OCTR Optocoupler Triac ZC / WE30x DIP 6 SL-Type 600V 5mA ZC
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Wurth Availability : 921
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USD 0.6622

Multiples of: 1

FOD2741BTV


Transistor Output Optocouplers Error amplifier Optocoupler
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor Availability : 921
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USD 0.6792

Multiples of: 1

EL816


Transistor Output Optocouplers Photo-Coupler
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Everlight Availability : 918
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USD 0.1134

Multiples of: 1

MOC3043M


Optotriac; 5.3kV; Uout:400V; zero voltage crossing driver; DIP6
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor Availability : 916
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USD 0.2907

Multiples of: 1

VO3062-X017T


Triac & SCR Output Optocouplers Phototriac ZC 1.5kV/us 10mA VDE
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Vishay Availability : 914
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USD 0.7035

Multiples of: 1

6N137SVM


Fairchild Semiconductor High Speed Optocouplers 10MBits Logic Gate Hi-Speed Optocoupler
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor Availability : 914
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USD 0.7256

Multiples of: 1

TLP351H(TP1,F)


Logic Output Optocouplers Photocoupler 35V LP IGBT 2mA 3750
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Toshiba Availability : 912
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USD 0.5951

Multiples of: 1

FOD4118SV


Fairchild Semiconductor Triac & SCR Output Optocouplers Zero-Cross Triac Out Snubberless, 800V
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor Availability : 912
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USD 2.024

Multiples of: 1

MOC3042S


60mA 400V 1.25V Two-way thyristor SMD Optocouplers - Thyristor Signal Output ROHS
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

GUOXIN JIAPIN SEMICONDUCTOR Availability : 911
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USD 0.1363

Multiples of: 5

CNY17F-1S(TA)-V


Transistor Output Optocouplers 40-80CTR 5000Vrms -55 to +110 Op Temp
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Everlight Availability : 911
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USD 0.1939

Multiples of: 5

CNY17F-1X006


Vishay Semiconductors Transistor Output Optocouplers Phototransistor Out Single CTR 40-80%
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Vishay Availability : 911
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USD 0.2552

Multiples of: 1

CNY117-1X007T


Transistor Output Optocouplers Phototransistor Out Single CTR 40-80%
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Vishay Availability : 911
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USD 0.2863

Multiples of: 1

ELM3083(TA)-V


Triac & SCR Output Optocouplers Triac Driver SMD (Zero-Crossing)
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Everlight Availability : 911
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USD 0.3243

Multiples of: 1

FOD3125S


Logic Output Optocouplers HighTemp 2.5A Output Gate Drive Opto
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor Availability : 911
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USD 2.5564

Multiples of: 1

6N138S-TA1


High Speed Optocouplers Darlington 100KBd Transistor Output
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Lite-On Availability : 909
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USD 0.2706

Multiples of: 1

FOD2741BS


Transistor Output Optocouplers Error amplifier Optocoupler
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor Availability : 909
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USD 0.7078

Multiples of: 1

CNY172TVM


Transistor Output Optocouplers Optocoupler Hi Bvceo Phototransistor
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor Availability : 908
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USD 0.1802

Multiples of: 1

Hot FOD2741BSV


Fairchild Semiconductor Transistor Output Optocouplers Error amplifier Optocoupler
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor Availability : 908
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USD 0.5932

Multiples of: 1

K844P


Transistor Output Optocouplers Phototransistor Out Quad CTR >20%
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Vishay Availability : 907
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USD 0.7315

Multiples of: 1

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