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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Global Stock ⓘ (▲▼)Price(USD) 

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PC817B


35V 50mA 200mV 1 6V 1.2V DC SMD-4 Optocouplers - Phototransistor 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.

HXY MOS Availability : 44464
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USD 0.0243

Multiples of: 20

SFH6106-3T


Transistor Output Optocouplers Phototransistor Out Single CTR>100-200%
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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 : 43650
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USD 0.2053

Multiples of: 1000

H11AA4SR2M


Optoisolator Transistor with Base Output 4170Vrms 1 Channel 6-SMD
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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 : 43650
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USD 0.2812

Multiples of: 1000

TLP291-4(GB-TP,E,T


Optocouplers SO-16 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.

Toshiba Availability : 43292
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USD 0.3413

Multiples of: 1

PS2506-1-A


Transistor Output Optocouplers Optocoupler 4-pin DIP
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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.

Renesas Availability : 42995
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USD 0.5628

Multiples of: 1

MOC3063SM


Triac & SCR Output Optocouplers 6P OPTO TRIAC
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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 : 41700
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USD 0.2897

Multiples of: 1

LTV-354T


80V 3750V 50mA 0.1V@1mA,20mA 1 1.24V AC,DC SOP-4-2.54mm Optocouplers - Phototransistor 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.

Youtai Availability : 41031
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USD 0.0539

Multiples of: 5

SFH691AT


Transistor Output Optocouplers Phototransistor Out AC-In CTR>50-300%
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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 : 40740
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USD 0.249

Multiples of: 2000

TLP521GB-S


Optocouplers SMD 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.

Youtai Availability : 39930
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USD 0.0671

Multiples of: 5

SFH6206-2T


Transistor Output Optocouplers Phototransistor Out AC-In CTR>63-200%
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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 : 39770
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USD 0.2114

Multiples of: 1000

TLP621


DIP4 Through Hole Single Channel 55 V 5300 Vrms Phototransistor 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.

Isocom Availability : 38800
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USD 0.1457

Multiples of: 100

SFH620A-3X


Optocoupler; THT; Channels:1; Out: transistor; Uinsul:5.3kV; DIP4
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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.

Isocom Availability : 38800
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USD 0.2056

Multiples of: 100

SFH620A-3XSMT&R


AC INPUT PHOTOTRANSISTOR OPTICALLY COUPLED ISOLATORS
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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.

Isocom Availability : 38800
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USD 0.276

Multiples of: 1000

PS2505-2


Optocouplers DIP-8 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.

Isocom Availability : 38800
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USD 0.483

Multiples of: 50

TIL198


Optocoupler DC-IN 2-CH Darlington DC-OUT 8-Pin PDIP
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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.

Isocom Availability : 38800
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USD 0.483

Multiples of: 50

TIL111


Optocoupler; THT; Channels:1; Out: transistor; Uinsul:5.3kV; 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.

Isocom Availability : 38775
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USD 0.1999

Multiples of: 65

MCT210


Transistor Output Optocouplers DIP-6 PHOTO TRANS
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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.

Isocom Availability : 38775
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USD 0.1973

Multiples of: 65

TCMT1103


Transistor Output Optocouplers Phototransistor Out
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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 : 34920
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USD 0.1665

Multiples of: 3000

TLP152(TPL,E


Logic Output Opto-couplers Gate Drive Phcplr 3750 Vrms
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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.

Toshiba Availability : 32864
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USD 0.2708

Multiples of: 1

PC817X3NSZ9F


Transistor Output Optocouplers Photocoupler
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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.

Sharp Availability : 22508
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USD 0.0437

Multiples of: 5

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