LM4040D41QFTA

Overview

The LM4040D41QFTA is an automotive-compliant precision micropower shunt voltage reference manufactured by Diodes Incorporated. It provides a fixed output voltage of 4.096 V with a D-grade initial tolerance of ±1% at +25°C. The device operates within a wide current range of 60 µA to 15 mA and supports an extended temperature range from -40°C to +125°C. It features a maximum temperature coefficient of 150 ppm/°C at 1 mA reverse current and utilizes a compact SOT-23 surface-mount package.

Feature Summary

• Automotive qualified under AEC-Q100 standards with PPAP capability for specific change control requirements
• Capable of maintaining stability without requiring an external output capacitor
• Designed for high capacitive load tolerance while preserving excellent performance

Applications

• Automotive reference voltages
• Automotive data acquisition systems

Procurement Notes

Verify the component against the official Diodes Incorporated datasheet DS36989 Rev. 3-2 to confirm the specific D-grade tolerance and Q-series automotive compliance. Ensure that the ordering suffix matches the required tape and reel packaging specifications. Confirm that the manufacturer's IATF 16949 certification aligns with your supply chain quality requirements before finalizing procurement.

Selection Notes

Select this part when designing circuits that require strict automotive qualification alongside space-constrained layouts. The SOT-23 package is suitable for applications where board area is limited. Verify that the operating current remains within the specified 60 µA to 15 mA range to ensure optimal temperature coefficient performance and long-term stability across the industrial temperature spectrum.

Part Context

This component belongs to the LM4040Q family, which serves as a pin-for-pin compatible alternative to industry-standard commercial references. The family includes various voltage options and accuracy grades (B, C, and D) tailored for different precision requirements. The Q-series specifically targets automotive environments, offering enhanced reliability and manufacturing traceability compared to standard commercial variants.

Replacement Considerations

LM4040D41IDBZTG4