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FOD2743C
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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 8-DIP
- Series：-
- Mfr：onsemi
- 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
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Overview
The onsemi FOD2743C is a single-channel optocoupler featuring a phototransistor output. It provides an isolation voltage of 5000Vrms and operates within a temperature range of -40°C to 85°C. The device utilizes an 8-pin DIP package. Key electrical parameters include a collector-emitter saturation voltage of 400mV, a maximum collector current of 50mA, and a collector-emitter voltage rating of 70V. The forward voltage is typically 1.2V, with a current transfer ratio ranging from 50% to 100%.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits
- Features a phototransistor output stage for signal transmission
- Designed for surface mount or through-hole integration in compact layouts
Applications
- Error amplifier coupling in power supply feedback loops
- Signal isolation in industrial control systems
- Interface circuits for microprocessor-based monitoring
Procurement Notes
Verify the specific suffix (e.g., C, CS, BS) as it denotes package type and manufacturing lot details. Confirm component availability status, as certain variants may be discontinued or subject to long lead times. Ensure the selected part matches the required isolation voltage and thermal specifications for the target application environment before finalizing procurement orders.
Selection Notes
Select this component when high isolation voltage is required for single-channel applications. Compare the current transfer ratio and saturation voltage against system requirements. Consider the package style compatibility with existing PCB footprints. Evaluate thermal performance limits relative to the operating environment to ensure reliable long-term operation under specified load conditions.
Part Context
This component belongs to the FOD2743 series of optocouplers manufactured by onsemi. The series includes various package options such as SMD and DIP configurations. These devices are engineered for general-purpose isolation tasks, offering robust performance in environments requiring galvanic separation between low-voltage control signals and high-voltage power stages.
Replacement Considerations
The FOD2743BS is listed as a similar replacement option. Verify pinout compatibility and electrical parameter equivalence before substitution. Ensure the alternative part meets the same isolation voltage and thermal ratings required by the original design specifications.
