1. AS431HMANTR-G1 Substitution Conclusion Summary: The AS431HMANTR-G1 can fully replace the original AS431HBNTR-G1 and represents a performance‑enhanced alternative. Both devices are fully compatible in terms of key electrical parameters, package, and functionality. The only difference lies in the reference voltage accuracy: the AS431HMANTR-G1 offers an initial accuracy of ±0.5%, which is superior to the ±1% of the original part. After substitution, the system will benefit from a more precise voltage reference, improving overall circuit performance metrics such as power supply regulation accuracy and ADC/DAC conversion accuracy, without requiring any changes to the external circuit design or PCB layout. From a technical standpoint, this substitution is both feasible and advantageous.