LM4040BTB-250GT3

Overview

The LM4040BTB-250GT3 is a precision micropower shunt voltage reference manufactured by onsemi. It provides a fixed output voltage of 2.5 V with an initial accuracy of 0.2%. The device operates within a temperature range of -40°C to +85°C and features a maximum temperature coefficient of 100 ppm/°C. Electrical specifications include a minimum operating current of 60 µA and a maximum shunt current of 15 mA. The component is housed in a SC-70-5 surface-mount package and is supplied in reel packaging.

Feature Summary

• Provides stable reference voltage over industrial temperature range
• Ultra-low operating current suitable for power-constrained designs
• High precision with 0.2% initial accuracy at 25°C

Applications

• Battery management systems
• Portable instrumentation
• Data acquisition systems

Procurement Notes

Verify the specific suffix GT3 corresponds to the SC-70-5 package and reel quantity when ordering. Confirm RoHS compliance status through official documentation as requirements may vary by region. Ensure the manufacturer part number matches exactly, as minor suffix variations can indicate different packaging or temperature grades. Cross-reference with the latest datasheet to confirm availability and any recent product changes.

Selection Notes

Select this component when a compact surface-mount solution is required for precise voltage referencing. The SC-70-5 package offers space savings compared to larger packages. The 0.2% accuracy class balances cost and performance for general-purpose applications. Consider the 100 ppm/°C temperature coefficient against stricter environmental requirements where lower drift might be necessary.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references from onsemi. The family includes various output voltages and accuracy grades. The BTB designation typically indicates the 0.2% accuracy grade and the 2.5V output option. These devices are designed to replace bulkier Zener diodes in precision analog circuits.

Replacement Considerations

Direct pin-compatible replacements include the LM4040BSD-250GT3 from onsemi, which shares similar electrical characteristics and packaging. Other manufacturers offer equivalent parts such as the Maxim Integrated LM4040BIM3-2.5+T, though package differences like SOT-23-3 must be accounted for during substitution.