Original Part
Alternative Part
1. AZ431BZ-ATRE1 Substitution Conclusion
From the perspective of core functionality and package, the AZ431BZ-ATRE1 can serve as a replacement for the original part. The key differences are as follows: the nominal reference voltage shifts from 2.495V to 2.5V, the initial accuracy is significantly improved from ±2.2% to ±0.8%, and the temperature coefficient is optimized from 50ppm/°C to 20ppm/°C. Implementing this substitute will result in a comprehensive enhancement of the system's voltage reference accuracy and temperature stability. For the vast majority of applications, this constitutes a direct upgrade. However, it is important to note that for the rare precision circuits where 2.495V is an absolute design value, the minor shift in nominal voltage may necessitate re-verification.
2. AS431BZTR-E1 Substitution Conclusion
The AS431BZTR-E1 is also a viable substitute for the original part. Its deviations from the original specifications are similar to those of the AZ431BZ-ATRE1: the reference voltage is 2.5V, the initial accuracy is ±1% (an improvement over the original ±2.2%), and the temperature coefficient is 20ppm/°C (superior to the original 50ppm/°C). Substitution will yield better temperature stability and a moderate improvement in accuracy. Although its accuracy is slightly lower than that of the AZ431BZ-ATRE1, it remains superior to the original part, making it a performance-upgraded alternative.
Analysis ID: 6386-9FBF000
Based on part parameters and for reference only. Not to be used for procurement or production.
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