Original Part
Alternative Part
Shunt Voltage Reference IC Adjustable 2.5V 36 VV ±0.8% 100 mA SOT-23-3
1. AZ431BN-ATRE1 Substitution Conclusion
Direct substitution is not recommended, primarily due to differences in accuracy and minimum operating current. Its reference voltage tolerance (±0.8%) is wider than that of the original part (±0.5%), resulting in lower initial output voltage accuracy. This may render it unsuitable for high-precision circuits with stringent absolute voltage requirements. Furthermore, its minimum cathode operating current (1mA) is significantly higher than the original's 40µA. In standby or always-on circuits requiring extremely low power consumption, this device will draw higher quiescent current and may fail to meet low-power design specifications.
2. ATL432BIDBZR Substitution Conclusion
This device serves as a preferred direct replacement option, with core electrical parameters showing high compatibility and some specifications even superior. Its reference voltage tolerance (±0.5%) matches the original part, ensuring equivalent output accuracy. The temperature coefficient (48ppm/°C) is comparable to the original's 50ppm/°C, guaranteeing stability across temperature variations. A key distinction is its significantly higher output/sink current capability (100mA versus the original's 40µA), providing greater margin when driving the same load and potentially offering improved dynamic response. However, note that its minimum cathode operating current (80µA) is slightly higher than the original's 40µA. Verification is required to ensure proper circuit startup and regulation at extremely low current operating points.
Analysis ID: 0620-1D88000
Based on part parameters and for reference only. Not to be used for procurement or production.
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