FAN4040AIS333X

Overview

The FAN4040AIS333X is a two-terminal voltage reference manufactured by Fairchild Semiconductor. It provides a nominal output voltage of 3.3 V with a tolerance range of 4.94 V to 5.06 V as per the associated FAN4040CIS35 documentation. The device operates within an industrial temperature range from -40 °C to +85 °C. It is housed in a SOT-23 package (PDSO3) featuring three pins and a rectangular plastic/epoxy body. The component functions as a single-output reference circuit designed for precision applications requiring stable voltage regulation.

Feature Summary

• Provides a stable two-terminal voltage reference output
• Operates across a wide industrial temperature range
• Utilizes a compact surface-mount SOT-23 package

Applications

• General regulation circuits
• Voltage reference functions
• Over-voltage protection systems

Procurement Notes

Verify the specific suffix 'S333' against official Fairchild documentation, as standard listings may use 'S35'. Confirm the exact output voltage tolerance and temperature grade match project requirements. Ensure the manufacturer designation aligns with current ON Semiconductor holdings following corporate acquisitions. Validate pinout compatibility with existing PCB footprints before procurement.

Selection Notes

Select this component when a precise 3.3 V reference is required in space-constrained designs. The SOT-23 form factor supports high-density circuit layouts. Verify that the operating temperature range meets environmental conditions. Consider the two-terminal configuration simplicity for cost-sensitive applications requiring basic voltage stabilization without complex external components.

Part Context

This part belongs to the FAN4040 series of two-terminal voltage references produced by Fairchild Semiconductor. The series includes variants with different output voltages and package options. These devices are categorized under power management integrated circuits, specifically serving as precision voltage references for analog and mixed-signal systems requiring reliable baseline voltage generation.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.