LM4040B41QFTA

Overview

The LM4040B41QFTA is a precision micropower shunt voltage reference manufactured by Diodes Incorporated. It provides a fixed output voltage of 4.096 V with an initial accuracy of ±0.2%. The device features a maximum temperature coefficient of 150 ppm/°C and supports a maximum shunt current of 15 mA. It operates within an industrial temperature range from -40°C to +85°C. The component is housed in a compact SOT-23 surface-mount package, designed for space-constrained applications requiring stable voltage regulation.

Feature Summary

• Provides precise fixed voltage reference with high initial accuracy
• Operates stably under capacitive load conditions without external compensation
• Designed for low-power applications with minimal operating current consumption

Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Industrial process control loops

Procurement Notes

Verify the specific suffix QFTA confirms AEC-Q100 automotive qualification status against official Diodes Incorporated documentation. Confirm the package marking code matches the SOT-23 footprint dimensions. Ensure the 4.096V output variant aligns with circuit requirements before procurement.

Selection Notes

Select this component when a stable 4.096V reference is required in small form factors. Consider the 150 ppm/°C temperature coefficient for thermal stability needs. Verify that the 15mA maximum current capability meets the load requirements of the target application design.

Part Context

This part belongs to the LM4040 series of micropower shunt references. The series offers various fixed voltages and accuracy grades. The LM4040B41QFTA specifically targets automotive and industrial markets requiring reliable performance in harsh environments.

Replacement Considerations

Check for pin-compatible alternatives such as the LM4040BIM3-4.1 or LM4040BEX3-4.1. Verify electrical parameters match exactly before substitution.