LM4041AECT-1.2

Overview

The LM4041AECT-1.2 is a micropower shunt voltage reference manufactured by STMicroelectronics, providing a stable fixed output voltage of 1.225 V. It features high precision with an initial accuracy of ±0.1% at 25 °C and a maximum temperature coefficient of 100 ppm/°C. The device operates within an extended industrial temperature range from -40 °C to +125 °C. It is housed in a compact SOT-323-5 surface-mount package, suitable for space-constrained designs. The component exhibits ultra-low operating current characteristics and maintains stability when connected to capacitive loads without requiring external stabilization components.

Feature Summary

• Provides a fixed 1.225 V output voltage with high precision tolerance
• Operates with ultra-low current consumption suitable for power-restricted designs
• Maintains stability under capacitive load conditions without external capacitors
• Available in compact surface-mount packages for space-saving applications

Applications

• Space-critical electronic designs requiring small footprint components
• Battery-powered systems utilizing low quiescent current references
• Industrial instrumentation requiring stable voltage references across wide temperature ranges
• Portable devices needing precise voltage regulation in limited board areas

Procurement Notes

Verify the specific suffix ECT corresponds to the SOT-323-5 package and extended temperature grade (-40°C to +125°C) as defined in the official datasheet. Confirm RoHS compliance status and packaging type (Tape and Reel) requirements against project specifications. Ensure ordering documentation matches the manufacturer's part number exactly to avoid variant mismatches regarding accuracy grades or thermal ratings.

Selection Notes

Select this component when design constraints demand a sub-miniature SOT-323-5 package alongside extended temperature operation up to 125 °C. The ±0.1% accuracy grade is appropriate for applications requiring tighter initial voltage tolerances compared to standard variants. Consider the low operating current profile if battery life or power efficiency is a primary design driver over higher current drive capabilities.

Part Context

This component belongs to the LM4041 family of precision micropower shunt voltage references produced by STMicroelectronics. The family offers various accuracy grades and temperature ranges packaged in SOT-23-3 and SOT-323-5 formats. The LM4041 series is designed to replace larger through-hole references in modern surface-mount electronics, providing reliable voltage referencing for analog circuits and data acquisition systems.

Replacement Considerations

LM4041BIM7-1.2/NOPB

FAQ

Does the LM4041AECT-1.2 require an external stabilizing capacitor?

No, the advanced design of the LM4041 allows it to remain stable with any capacitive load without requiring an external stabilizing capacitor.

What is the maximum temperature coefficient for this device?

The maximum temperature coefficient is 100 ppm/°C, ensuring stable performance across its operating temperature range.