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 ±0.5% 100 mA SOT-23-3
1. ZXRE252BSA-7 Substitution Conclusion
Not fully feasible; careful evaluation is required. While its basic parameters (adjustable up to 36V, 100mA output, ±0.5% tolerance) are compatible with the original part and its package (SOT-23-3) is pin-compatible, two critical differences exist. First, its typical cathode operating current is only 65µA, significantly lower than the original part's 1mA. This necessitates a recalculation of the external bias resistor during substitution; failure to do so may degrade reference voltage accuracy or cause circuit malfunction. Second, its datasheet does not specify a temperature coefficient (Temp Coef), introducing uncertainty regarding temperature stability and posing a risk in applications with demanding operational temperature range requirements. Substitution may only be considered in scenarios with extreme power sensitivity and relaxed temperature requirements, and only after thorough validation.
2. AS431ANTR-E1 Substitution Conclusion
Feasible and represents a direct, performance-equivalent or superior replacement option. This part closely matches the original in all key parameters: nominal voltage (2.5V), tolerance (±0.5%), maximum output voltage (36V), output current (100mA), and crucially, the cathode operating current (1mA) are identical. This ensures the peripheral circuit typically requires no modification upon substitution. Furthermore, its typical temperature coefficient of 20ppm/°C is notably better than the original part's 50ppm/°C, offering superior voltage stability across the full temperature range. The package is also SOT-23-3 and pin-compatible. This part is a direct drop-in replacement for the original and may provide enhanced performance, particularly in temperature characteristics.
Analysis ID: 9B90-D563000
Based on part parameters and for reference only. Not to be used for procurement or production.
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