FODM121AV

Overview

The FODM121AV is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output and operates within a temperature range of -40°C to +110°C. Key electrical parameters include a maximum collector-emitter voltage of 80 V, a maximum collector current of 80 mA, and a forward current of 50 mA. The device provides an isolation voltage of 3750 Vrms and has a typical current transfer ratio of 300%. It is housed in a 4-SMD surface-mount package with a power dissipation rating of 150 mW.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits
• Utilizes an NPN phototransistor for digital signal transmission
• Designed for surface-mount assembly in compact layouts

Applications

• Industrial control systems requiring signal isolation
• Power supply feedback loops
• Microcontroller interface circuits

Procurement Notes

Verify the specific suffix 'AV' against the manufacturer's latest datasheet to confirm pinout and material composition. Ensure the selected packaging type matches the intended assembly process. Cross-reference the RoHS status with current environmental regulations before finalizing procurement decisions.

Selection Notes

Select this component when a single channel with NPN output is required. Consider the 3750 Vrms isolation rating for safety-critical applications. Verify that the 80 V collector voltage and 80 mA current limits meet the load requirements. Check thermal constraints given the 150 mW power dissipation limit.

Part Context

This part belongs to the FODM121 series of transistor output optocouplers. The series is designed for general-purpose isolation tasks. The AV suffix typically denotes specific packaging or material variations within the standard product line. It serves as a discrete solution for galvanic isolation in electronic circuits.

Replacement Considerations

FODM121A is a documented substitute within the same family.