FM810MS3X

Supervisors Overview

The FM810MS3X is a power supply support circuit manufactured by Fairchild Semiconductor. It functions as a fixed, single-channel voltage supervisor housed in a 3-pin SOT-23 package (PDSO3). The device operates with CMOS technology and provides a fixed supervision threshold of +4.38V. This component is designed to monitor power rails and ensure system stability by detecting under-voltage conditions.

Supervisors Feature Summary

• Provides fixed voltage supervision for power supply monitoring
• Utilizes CMOS technology for low power consumption
• Configured as a single-channel supervisor circuit

Supervisors Applications

• Power supply monitoring in electronic systems
• Voltage supervision for microprocessor reset circuits
• System reliability enhancement in embedded applications

Supervisors Procurement Notes

Verify the manufacturer origin, as Rochester Electronics also lists this part number. Confirm the specific supervision voltage matches the design requirement of 4.38V. Ensure the SOT-23 package compatibility with the PCB footprint. Check for lead-free compliance if required by project specifications.

Supervisors Selection Notes

Select this component when a fixed 4.38V supervision threshold is required. The SOT-23 package suits space-constrained designs. CMOS technology offers efficiency benefits. Verify that the single-channel configuration meets the system's monitoring needs without requiring additional channels.

Supervisors Part Context

The FM810 series includes variants like FM810RE with different thresholds. The MS3X suffix typically denotes the SOT-23 package and specific revision. Fairchild Semiconductor is the original designer, while other distributors may list it under their own inventory codes.

Supervisors Replacement Considerations

FM810MS3 is a direct equivalent variant. FM810RE shares the same family but has a different threshold voltage (+2.63V), so it is not a pin-compatible functional substitute unless the voltage requirement changes.