LM4040B41IDBZR

Overview

The LM4040B41IDBZR is a micropower shunt voltage reference manufactured by Texas Instruments, formerly National Semiconductor. It provides a fixed output voltage of 4.096 V with an initial accuracy of 0.2%. The device operates within a temperature range of -40 °C to +125 °C and features a maximum temperature coefficient of 150 ppm/°C. It utilizes a SOT-23-3 surface-mount package and supports a maximum shunt current of 15 mA.

Feature Summary

• Provides stable precision voltage reference in compact SOT-23-3 package
• Maintains high accuracy across wide industrial temperature range
• Designed for low power consumption applications

Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Handheld meters

Procurement Notes

Verify the manufacturer designation as Texas Instruments or National Semiconductor on the component marking. Confirm the suffix IDBZR corresponds to the SOT-23-3 reel packaging. Ensure the B grade indicates 0.2% accuracy and the 41 suffix denotes the 4.096 V output voltage before integration.

Selection Notes

Select this component when a 4.096 V reference with 0.2% tolerance is required in space-constrained designs. The SOT-23-3 package offers a small footprint suitable for portable electronics. Verify that the 150 ppm/°C temperature coefficient meets the system's thermal stability requirements over the -40 °C to +125 °C operating range.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references. The family includes various output voltages and accuracy grades (A, B, C, D). The LM4040 series is designed to replace larger Zener diodes in precision applications requiring lower power consumption and better stability.

Replacement Considerations

LM4040B41IDBZT is a tape-and-reel alternative from the same manufacturer.