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The LM4040QBIM3-2.5/NOPB is a micropower shunt voltage reference from Texas Instruments, providing a fixed output of 2.5 V with an initial accuracy of ±0.2%. Packaged in a compact SOT-23-3 surface-mount format, it operates within a temperature range of -40°C to +125°C and meets AEC-Q100 automotive qualification standards. The device features a low temperature coefficient of 40 ppm/°C, supports a maximum cathode current of 15 mA, and draws a minimum operating current of 60 µA.
Verify that the specific suffix 'QBI' corresponds to the required automotive grade and ±0.2% accuracy tier. Confirm the package type matches the target PCB footprint. Ensure the supply chain source provides valid traceability documentation for AEC-Q100 compliance requirements.
Select this component when automotive certification and high precision are mandatory. It serves as a direct upgrade to standard commercial grades for applications requiring operation up to 125°C. Compare against lower accuracy variants if cost reduction is prioritized over strict tolerance specifications.
This part belongs to the LM4040 family of micropower shunt voltage references manufactured by Texas Instruments. The series offers various fixed voltage options and accuracy grades. The QBI designation specifically denotes the automotive-qualified version with enhanced thermal performance and tighter initial accuracy compared to standard industrial counterparts.
LM4040BIM3-2.5/NOPB: Commercial grade equivalent lacking automotive qualification and reduced thermal range.