Original Part
Shunt Voltage Reference IC Adjustable 2.5V 36 VV ±0.4% 100 mA TO-92-3
Alternative Part
1. AS431BZTR-G1 Substitution Conclusion
Direct substitution is not recommended. While its voltage range, output current, and package are identical to the original part, its initial accuracy (±1%) is significantly worse than the original’s ±0.4%. In applications requiring high-precision voltage reference, its initial output voltage error could be up to 2.5 times larger than the original, potentially failing to meet system accuracy requirements. Although its temperature coefficient (20 ppm/°C) is better than the original’s (30 ppm/°C), resulting in less voltage variation over the operating temperature range, the poorer initial accuracy is generally the more critical limiting factor.
2. AZ431AZ-ATRG1 Substitution Conclusion
This device is electrically compatible for substitution and offers some superior specifications. Its core parameters—adjustable voltage range (2.5–36 V), 100 mA output current, 1 mA cathode operating current—and package are identical to the original part. A key improvement is its temperature coefficient of 20 ppm/°C, which is better than the original’s 30 ppm/°C, providing lower output voltage drift and better stability over temperature while maintaining the same ±0.4% initial accuracy. Based on the provided parameters, the AZ431AZ-ATRG1 appears to be an equivalent or even better alternative. However, verification testing in the actual circuit is necessary, and attention should be paid to potential differences in unlisted parameters—such as long-term reliability and noise performance—due to the change in manufacturer.
Analysis ID: 63D0-C0FE000
Based on part parameters and for reference only. Not to be used for procurement or production.
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