Original Part
Shunt Voltage Reference IC Adjustable 2.5V 36 VV ±0.5% 100 mA SOT-23-3
Alternative Part
1. LM431SACM32X Substitution Conclusion
In circuits requiring only basic voltage reference functionality with relaxed demands on accuracy and temperature stability, the LM431SACM32X can serve as a substitute, as its core electrical parameters (output voltage range, cathode current, package) are compatible with the original part. The key differences are a significantly reduced initial accuracy (±2% vs. ±0.5%) and a degraded typical temperature coefficient (50ppm/°C vs. 20ppm/°C). In applications operating over a wide temperature range or requiring high absolute accuracy of the reference voltage, this part will introduce greater absolute voltage error and temperature drift error, potentially impacting overall system accuracy and consistency. Therefore, it is not recommended as a direct replacement in applications with equivalent performance requirements.
2. LM431SBCM32X Substitution Conclusion
The LM431SBCM32X is a more viable alternative, offering a better balance between performance and cost, with fully compatible core electrical interfaces and package. The differences include a slightly relaxed initial accuracy (±1% vs. ±0.5%) and a degraded typical temperature coefficient (50ppm/°C vs. 20ppm/°C). Additionally, its nominal output voltage is 2.495V, representing a slight nominal deviation from the original part's 2.5V. For most applications, its voltage accuracy remains acceptable. However, its voltage stability (temperature drift) over a wide temperature range will be inferior to the original part, and the system design must confirm acceptability of the 2.495V reference value. For non-precision reference applications, this part can typically be used as a successful substitute.
Analysis ID: C55C-63F1000
Based on part parameters and for reference only. Not to be used for procurement or production.
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