Original Part
Alternative Part
Shunt Voltage Reference IC Adjustable 2.5V 36 VV ±0.5% 100 mA SOT-23-3
Shunt Voltage Reference IC Adjustable 2.5V 36 VV ±1% 100 mA SOT-23-3
1. AS431IANTR-G1 Substitution Conclusion
From the perspective of core functionality and package, the AS431IANTR-G1 is a viable direct substitute. Its SOT-23-3 package, 2.5V reference voltage, 36V maximum operating voltage, and 100mA cathode current capability all match the original part. The key differences are: its output voltage tolerance is ±0.5%, superior to the original's ±1%, offering higher initial accuracy at room temperature; however, its datasheet does not explicitly specify the critical temperature coefficient (tempco) parameter, whereas the original part has a typical value of 50ppm/°C. In applications with a wide temperature range, the overall accuracy and stability of the AS431IANTR-G1 may not match that of the original part with a defined tempco, introducing performance uncertainty. For applications where temperature stability is not critical, it can serve as an upgrade. However, for precision or wide-temperature-range applications, its performance across the full temperature range should be carefully validated.
2. AS431IBNTR-G1 Substitution Conclusion
The AS431IBNTR-G1 is fully compatible with the original part in terms of basic electrical specifications and package, making it a direct pin-for-pin replacement option. The differences are: its output voltage tolerance is ±1%, identical to the original; but similarly, its datasheet does not provide a temperature coefficient specification. Their performance in the most critical parameter—DC accuracy (tolerance)—is comparable. However, the output voltage drift characteristic of the AS431IBNTR-G1 across the full temperature range is an unknown; it could be better, equal to, or worse than the original's typical 50ppm/°C. This part is suitable for substitution in circuits that require specified initial accuracy but are insensitive to temperature variation or operate within a narrow temperature range. If used in environments with significant temperature swings, its long-term stability remains uncertain. It is recommended to confirm performance through testing or by requesting more detailed specifications from the manufacturer.
Analysis ID: AE58-DDB7000
Based on part parameters and for reference only. Not to be used for procurement or production.
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