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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TCMT1600


Transistor Output Optocouplers Phototransistor Out Single CTR 80-300%
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Vishay 2936
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AUD 0.4221
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ACPL-W346-500E


Logic Output Optocouplers OPTOCOUPLER GATE DRV TR+LF
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Broadcom 956
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AUD 1.2652
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FOD2743BSV


Fairchild Semiconductor Transistor Output Optocouplers Error Amp Coupler Transistor Output
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ON Semiconductor 591
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AUD 1.4019
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HCPL2531TSR2VM


Fairchild Semiconductor High Speed Optocouplers
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ON Semiconductor 591
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AUD 2.0522
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IL4218-X017T


Triac & SCR Output Optocouplers Phototriac Output, Low Input Current
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Vishay 590
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AUD 3.7968
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ILD615-4X009T


Transistor Output Optocouplers Phototransistor Out Dual CTR > 160-320%
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Vishay 589
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AUD 1.0918
Multiples of: 1

FODM214R2


Transistor Output Optocouplers Single Channel AC Sensing Input Phototransistor Optocoupler In Half-Pitch Mini-Flat 4-Pin Package Single Channel AC Sensing Input Phototransistor Optocoupler In Half-Pitch Mini-Flat 4-Pin Package
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ON Semiconductor 587
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AUD 0.3546
Multiples of: 1

TLP350H(F)


Logic Output Optocouplers Photo-IC 35V VCC 3750 Vrms 5mA 30V
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Toshiba 517
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AUD 2.2776
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TLP291-4(GB.E(T


Optocoupler; SMD; Channels:4; Out: transistor; 2.5kV; SOP16
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Toshiba 497
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AUD 1.2475
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CNY17F-4S-TA


Transistor Output Optocouplers HCEV, 160%, 5KV
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Lite-On 99
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AUD 0.2282
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