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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4N35SM


Optocoupler; SMD; Channels:1; Out: transistor; Uinsul:7.5kV
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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 : 8872
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USD 0.2045

Multiples of: 1

AT3H4A-CuH-S


3.75kV 50mA 200mV@1mA,20mA 1 1.2V AC,DC SSOP-4 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 : 5752
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USD 0.0486

Multiples of: 10

LTV-244-GB-G


SMD-16P 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.

Lite-On Availability : 5741
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USD 0.3716

Multiples of: 1

APV1121SJ


Photodiode Output Optocouplers
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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.

Panasonic Availability : 5738
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USD 1.5961

Multiples of: 1

VO610A-2


Transistor Output Optocouplers Phototransistor Out CTR 63-125%
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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 : 5737
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USD 0.1243

Multiples of: 1

CNY17-3S-TA1


Optocoupler; SMD; Channels:1; Out: transistor; Uinsul:5kV; Uce:70V
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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 : 5733
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USD 0.1155

Multiples of: 1

IL213AT


Transistor Output Optocouplers Phototransistor Out Single CTR >100%
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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 : 5726
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USD 0.3366

Multiples of: 1

ACPL-247-500E


Transistor Output Optocouplers Phototx Coupler Quad
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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.

Broadcom Availability : 5723
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USD 0.6751

Multiples of: 1

IL420-X007


Triac & SCR Output Optocouplers Phototriac Output Low Input Current
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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 : 5720
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USD 1.9435

Multiples of: 1

PC357C


SOP-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.

Youtai Availability : 5713
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USD 0.0347

Multiples of: 10

VOM618A-4T


Transistor Output Optocouplers Phototransistor Out CTR 160-320% 1mA
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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 : 5708
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USD 0.1386

Multiples of: 1

SFH615A-3X016


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 : 5683
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USD 0.3014

Multiples of: 1

SL-1008


80V 5000V 50mA 0.3V@1mA,10mA 1 6V 1.25V 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.

SLKORMICRO Availability : 5674
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USD 0.0663

Multiples of: 1

PS2561L-1-V-A


Transistor Output Optocouplers Hi-Iso Photo 1-Ch
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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.

CEL Availability : 5653
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USD 0.3599

Multiples of: 1

OR-1008


Optocouplers SMD-4 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.

Orient Availability : 5635
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USD 0.0328

Multiples of: 10

EL357C


SOP-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.

GOODWORK Availability : 5626
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USD 0.035

Multiples of: 10

K10101B


Optocouplers DIP-4 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.

Cosmo Availability : 5606
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USD 0.0308

Multiples of: 10

HMHA2801


Transistor Output Optocouplers Optocoupler 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 : 4725
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USD 0.1637

Multiples of: 1

MOC3022


Optotriac; 5kV; Uout:400V; without zero voltage crossing driver
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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 : 2779
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USD 0.0907

Multiples of: 5

SFH618A-4


Transistor Output Optocouplers RECOMMENDED ALT 78-VO618A-4
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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 : 242
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USD 0.3514

Multiples of: 1

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