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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EL354N(A)(TA)-VG


Transistor Output Optocouplers Photo Transistor 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.

Everlight Availability : 78157
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USD 0.0722

Multiples of: 5

TLP621GB-1


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.

Youtai Availability : 77963
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USD 0.0813

Multiples of: 5

PC817B


5kV 50mA 200mV@1mA,20mA 1 6V 1.2V DC DIP-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 : 76649
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USD 0.0224

Multiples of: 20

EL817(C)-F


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.

Everlight Availability : 76397
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USD 0.0273

Multiples of: 20

FOD814A


Optocoupler; THT; 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.

ON Semiconductor Availability : 75660
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USD 0.1326

Multiples of: 100

S2S3LA0F


Triac & SCR Output Optocouplers 5mA Ift 600V nonZC Phototriac 3Kpcs
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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 : 74478
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USD 0.612

Multiples of: 1

TCMT1100


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 : 74297
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USD 0.1749

Multiples of: 1

VOS617AT


Transistor Output Optocouplers CTR 50-600% 5mA
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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 : 73843
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USD 0.165

Multiples of: 1

VOM617A-7T


Transistor Output Optocouplers Phototransistor Out CTR 80-160% 5mA
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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 : 73281
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USD 0.1319

Multiples of: 1

TCMD1000


Transistor Output Optocouplers Photodarlington Out Single CTR >600%
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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 : 73082
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USD 0.2299

Multiples of: 1

EL3H4(A)(TA)-G


Transistor Output Optocouplers 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.

Everlight Availability : 72935
Ship by Wed. 25 Dec to Mon. 30 Dec Calender.png

USD 0.0614

Multiples of: 10

EL3H4(A)(TA)-VG


Transistor Output Optocouplers 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.

Everlight Availability : 72750
Ship by Wed. 11 Dec to Tue. 17 Dec Calender.png

USD 0.1294

Multiples of: 5000

LTV-814S-TA1


Optocoupler; SMD; Channels:1; Out: transistor; Uinsul:5kV; Uce:35V
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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 : 72699
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USD 0.0692

Multiples of: 5

PC817X3NSZW


Transistor 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.

Sharp Availability : 72090
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USD 0.0526

Multiples of: 5

KPC357NT0CTLD


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.

Cosmo Availability : 70771
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USD 0.0527

Multiples of: 5

TLP265J(TPL,E


Triac & SCR Output Optocouplers Non Zero Turn On 600V 70mA 3750Vrms
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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 : 69479
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USD 0.2378

Multiples of: 1

GX817C-S


35V 5000V -55℃~+110℃ 50mA 18us@2mA,100Ω 18us@2mA,100Ω 0.1V@1mA,20mA 1 6V 1.2V Phototransistor DC 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.

GUOXIN JIAPIN SEMICONDUCTOR Availability : 68472
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USD 0.0251

Multiples of: 10

PS9121-F3-AX


CEL High Speed Optocouplers 3.3V 5pin SOP Digi OC HI CMRR NL
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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 : 67700
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USD 1.3599

Multiples of: 1

PS2805C-4-F3-A


CEL Transistor Output Optocouplers Quad sgl TR AC Cplr
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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 : 66852
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USD 1.243

Multiples of: 1

EL3021S1(TA)


Triac & SCR Output Optocouplers 400PBV 5000Vrms -55 to +100 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 : 63811
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USD 0.1159

Multiples of: 5

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