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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058399HB


TLP521-4(A) SIN.TRANS. QUAD CHAN
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Toshiba Availability : 0
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USD 0.4848
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MCT62


MCT62 #1202 PCN20020703 T/HOLE
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USD 0.5183
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MRF5812GR1


BIPOLAR/LDMOS TRANSISTOR SO-8 LEADFREE T/R
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Microchip Availability : 0
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USD 0.6281
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6N136020


Avago Technologies High Speed Optocouplers 1 Mbs 5000Vrms
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Broadcom Availability : 0
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USD 0.6466
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PC815XJ0000F


PC815XJ0000F PHOTOTRANSISTOR T/HOLE
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Sharp Availability : 0
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USD 0.6549
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PS2506-1


PS2506-1 OPTO OPTOCOUPLER
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CEL Availability : 0
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USD 0.6672
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PC829


PC829 INTEGRATED CIRCUIT DIP DIP8
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Vishay Availability : 0
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USD 0.825
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MOC3041


MOC3041M OPTOCOUPLER T/HOLE
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USD 0.9822
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MOC3041


MOC3041 OPTO TRIAC T/HOLE
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053000AB


6N136 #1801 PCNCCNPOC#82 DIP
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USD 1.0057
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