FOD2743AV

Overview

The onsemi FOD2743AV is a single-channel optoisolator featuring a transistor 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-DIP package for through-hole mounting. Key electrical parameters include a maximum collector-emitter saturation voltage of 400mV, a forward voltage of approximately 1.2V, 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
• Features a phototransistor output stage for signal transmission
• Designed for surface-mount or through-hole integration in compact layouts

Applications

• Error amplifier coupler circuits
• Optically isolated power supply feedback loops
• Industrial control system signal interfacing

Procurement Notes

Verify the specific suffix 'AV' against official datasheets to confirm pinout and packaging compatibility. Confirm RoHS compliance status as manufacturing statuses may change. Check for obsolescence notices or end-of-life declarations before finalizing procurement plans to ensure long-term supply stability.

Selection Notes

Select this component when high isolation voltage is required for single-channel applications. Ensure the operating temperature range meets environmental constraints. Verify that the transistor output type aligns with the receiving circuit's input requirements compared to logic or relay outputs.

Part Context

This part belongs to the FOD2743 family of optocouplers manufactured by onsemi. The family includes variants with different packages such as SMD and DIP options. These devices are generally used for isolating low-voltage control signals from higher-voltage power stages in electronic systems.

Replacement Considerations

FOD2743BS is listed as a similar replacement option.