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FOD2743CT
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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 8-DIP
- Series：-
- Mfr：Fairchild Semiconductor
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：5000Vrms
- Current Transfer Ratio (Min)：50% @ 1mA
- Current Transfer Ratio (Max)：100% @ 1mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：-
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：70V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.07V
- Current - DC Forward (If) (Max)：-
- Vce Saturation (Max)：400mV
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Through Hole
- Package / Case：8-DIP (0.400", 10.16mm)
- Supplier Device Package：8-DIP
- Grade：-
- Qualification：-
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Overview
The FOD2743CT is a transistor output optocoupler featuring an integrated error amplifier. It combines a gallium arsenide infrared LED with a phototransistor and precision shunt reference circuitry. The device provides electrical isolation with a minimum collector-emitter breakdown voltage of 70 V and a maximum insulation voltage of 5000 Vrms. It operates within a temperature range of -25 °C to 85 °C, supports a maximum forward current of 20 mA, and offers a nominal current transfer ratio of 50%.
Feature Summary
- Integrates a precision programmable shunt reference with an optocoupler for error amplification
- Provides high-voltage isolation between input and output circuits
- Utilizes a single-channel transistor output configuration
Applications
- Switching power supply feedback loops
- Isolated error signal transmission
- Voltage regulation systems requiring galvanic isolation
Procurement Notes
Verify the specific suffix 'CT' against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure compliance with RoHS directives and check for any obsolescence notices or lifecycle status updates from ON Semiconductor prior to procurement.
Selection Notes
Select this component when an integrated error amplifier is required within an isolated environment. Consider the 5000 Vrms isolation rating and 70 V breakdown voltage for safety requirements. Verify that the 50% nominal current transfer ratio meets the gain requirements of the target control loop design.
Part Context
This part belongs to the FOD2743 family of optically isolated amplifiers manufactured by Fairchild Semiconductor, now part of ON Semiconductor. The series includes variants such as FOD2741BTV and FOD2743BSDV, differing primarily in packaging and specific electrical tolerances while maintaining the core error amplifier functionality.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-reference with ON Semiconductor's official replacement guide for equivalent optocouplers with integrated references.
