Original Part
Alternative Part
1. TL431CLP Substitution Conclusion
The TL431CLP can directly replace the TL431CZ, as both share identical key electrical parameters (adjustable reference voltage 2.495V–36V, 100mA output current, 1mA cathode operating current) and package (TO-92-3). The difference in accuracy (±2.2% vs. ±2.21%) is negligible. TI’s TL431CLP is fully equivalent to ST’s original part in functionality, performance, and physical compatibility, representing a standard-grade interchangeable device from different manufacturers. It can be substituted without any circuit modifications.
2. TL431BCLP Substitution Conclusion
The TL431BCLP is electrically compatible with the TL431CZ in terms of voltage range, current capability, and package. However, its core distinction lies in significantly improved accuracy (±0.4% vs. ±2.21%) and the inclusion of a typical temperature coefficient (50ppm/°C). The ON Semiconductor variant belongs to a higher precision grade, delivering superior performance in applications requiring more stable reference voltages or wider operating temperature ranges, though potentially at a higher cost. If the original circuit has relaxed accuracy requirements, substitution may result in over‑specification, but the device can be used directly without hardware changes.
Analysis ID: 5705-32C2000
Based on part parameters and for reference only. Not to be used for procurement or production.
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