LM4041AIX3-1.2+T

Overview

The LM4041AIX3-1.2+T is a precision micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed reverse breakdown voltage of 1.225V with an initial accuracy of 0.1% and a maximum temperature coefficient of 100ppm/°C. The device operates within a wide current range of 60µA to 12mA and features low dynamic impedance. It is housed in a subminiature 3-pin SC70 surface-mount package measuring 1.8mm x 1.8mm. The component is guaranteed to function over the industrial temperature range of -40°C to +85°C.

Feature Summary

• Ultra-small 3-pin SC70 surface-mount package for space-critical designs
• High precision with 0.1% maximum initial accuracy at 25°C
• Stable operation without external stabilizing capacitors across any capacitive load
• Low output noise performance suitable for sensitive analog circuits

Applications

• Portable, battery-powered equipment
• Notebook computers
• Cell phones
• Industrial process controls

Procurement Notes

Verify that the ordering suffix 'IX3' corresponds specifically to the SC70-3 package type rather than SOT23-3 variants. Confirm the '+T' designation indicates lead-free/RoHS compliance as per manufacturer documentation. Ensure the specific grade 'A' matches the required 0.1% initial accuracy tolerance for the design. Cross-reference the full part number against official distributor catalogs to confirm availability and exact pinout configuration.

Selection Notes

Select this component when strict board space limitations require the compact SC70-3 footprint instead of larger packages. Choose this variant if the application demands high initial accuracy (0.1%) combined with low power consumption. Verify that the operating environment remains within the specified -40°C to +85°C range. Consider the 60µA minimum operating current requirement to ensure proper regulation under light load conditions.

Part Context

This device belongs to the LM4041 family of improved precision micropower shunt voltage references. It shares core bandgap circuitry with other grades like B, C, and D, which offer lower accuracy but potentially different cost profiles. The family includes adjustable versions and higher voltage fixed outputs. The LM4041 series is designed to replace older zener diodes or less precise references in portable electronics where size and battery life are critical constraints.

Replacement Considerations

LM4041AIM3-1.2+T offers identical electrical specifications but utilizes the SOT23-3 package instead of SC70-3. LM4041BIX3-1.2+T provides the same SC70-3 package with reduced 0.2% initial accuracy. LM4041CEX3-1.2+T extends the temperature range to +125°C while using the SC70-3 package. Verify pin compatibility and thermal dissipation limits when substituting these variants.