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FOD2743ASD
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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 8-SMD
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR)
- 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：Surface Mount
- Package / Case：8-SMD, Gull Wing
- Supplier Device Package：8-SMD
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Overview
The FOD2743ASD is a single-channel optoisolator featuring a transistor output, manufactured by onsemi. It provides an isolation voltage of 5000Vrms and operates within a temperature range of -40°C to +85°C. The device utilizes an 8-SMD gull-wing package for surface mount installation. Key electrical parameters include a maximum collector-emitter saturation voltage of 400mV, a forward voltage of approximately 1.5V, and a collector current rating of 50mA. The current transfer ratio ranges from 50% to 100% at a forward current of 1mA.
Feature Summary
- Provides high-voltage galvanic isolation between input and output circuits
- Integrates a phototransistor output stage for signal transmission
- Designed for surface-mount assembly in compact electronic layouts
Applications
- Error amplifier coupling in power supply feedback loops
- Signal isolation in industrial control systems
- Interface circuits requiring DC input and transistor output isolation
Procurement Notes
Verify component authenticity through authorized distributors due to potential availability of obsolete or refurbished units. Confirm the specific suffix designation matches project requirements, as packaging variations may exist. Ensure compliance with RoHS standards if required by the application environment. Cross-reference datasheet specifications against current inventory listings to validate performance parameters before integration into final designs.
Selection Notes
Select this component when a single-channel transistor output isolator with 5000Vrms isolation capability is required. Consider the 8-SMD gull-wing package for space-constrained PCB layouts. Evaluate the current transfer ratio and saturation voltage against load requirements. Verify that the operating temperature range meets environmental conditions. Compare against alternative models in the FOD2743 series for pin compatibility and functional equivalence.
Part Context
The FOD2743ASD belongs to the FOD2743 family of optoisolated amplifiers produced by onsemi. This series includes variants such as FOD2743CS and FOD2743BSD, which share similar functional characteristics but may differ in packaging or specific electrical tolerances. The component serves as a discrete solution for creating isolated signal paths in applications demanding reliable electrical separation between low-voltage control logic and higher-voltage power stages.
Replacement Considerations
The FOD2743BS is listed as a similar substitute part number by onsemi. Verify pinout compatibility and electrical parameter alignment before substitution. Check for any differences in packaging or suffix designations that may affect mechanical fit or thermal performance.
