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FOD2743CV
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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 (0.300", 7.62mm)
- Supplier Device Package：8-DIP
- Grade：-
- Qualification：-
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Overview
The FOD2743CV is a transistor output optocoupler designed as an error amplifier coupler. It features a single channel configuration with an NPN phototransistor output. The device provides high isolation capability of 5000 Vrms between input and output circuits. Key electrical parameters include a minimum collector-emitter breakdown voltage of 70 V, a nominal current transfer ratio of 50%, and a maximum forward voltage of 1.2 V. It operates within a temperature range of -40°C to +85°C and is housed in an 8-pin DIP package.
Feature Summary
- Integrates an infrared emitting diode with an NPN phototransistor for signal transmission across isolation barriers.
- Provides secure networking through high voltage isolation capabilities suitable for sensitive control applications.
- Designed specifically for error amplifier coupling functions in feedback loops.
Applications
- Error amplifier coupling in switching power supplies
- Secure networking interfaces requiring galvanic isolation
- Feedback loop isolation in industrial control systems
Procurement Notes
Verify the specific suffix 'CV' against the manufacturer's latest datasheet to confirm pinout compatibility and packaging details. Ensure the component meets required RoHS compliance standards for your assembly process. Cross-reference the UL and VDE approval markings on the physical device with official certification databases to validate safety ratings before integration into regulated equipment designs.
Selection Notes
Select this component when a dedicated error amplifier coupler is required rather than a standard logic output optocoupler. Consider the 50% CTR specification for biasing requirements in the receiving circuit. Evaluate the 5000 Vrms isolation rating against the system's creepage and clearance needs. Compare thermal dissipation characteristics if operating near the upper temperature limit.
Part Context
This part belongs to the FOD2743 series of optically isolated amplifiers manufactured by Fairchild Semiconductor, now part of onsemi. The series includes variants such as FOD2741BTV and FOD2743B, which share similar isolation architectures but may differ in current transfer ratios or specific packaging options. These devices are categorized under transistor output optocouplers used for precise analog signal transmission.
Replacement Considerations
Check for direct substitutes like FOD2743B or FOD2741BTV, noting that differences in current transfer ratio (e.g., 100% vs 50%) may require circuit adjustment. Verify that any replacement maintains the same 8-DIP footprint and 5000 Vrms isolation rating to ensure mechanical and electrical compatibility without redesigning the PCB layout.
