Original Part
Alternative Part
1. TL431CLP Substitution Conclusion
The TL431CLP can fully replace the original TL431IZ, as both share nearly identical key electrical parameters, including adjustable output voltage range (2.495V to 36V), output current capability (100mA), and cathode current (1mA). Tolerance variation is negligible (±2.2% vs. ±2.21%), making them functionally equivalent in practical applications. Differences lie in the manufacturer (Texas Instruments vs. STMicroelectronics) and minor discrepancies in package marking (TL431CLP is specified as TO-226-3 standard three-pin package, while TL431IZ is listed as TO-226-2, though both are described as TO92-3 in practice, with compatible pinouts). No modification is required for physical installation or functionality, but supply chain and cost factors should be verified, as cross‑manufacturer substitution may involve availability or pricing variations.
2. TL431ACLPG Substitution Conclusion
The TL431ACLPG is not only a viable replacement for the original TL431IZ but also offers improved performance. Key differences include tighter tolerance (±1% vs. ±2.21%) and a specified typical temperature coefficient (50ppm/°C, which is not defined for the TL431IZ). The TL431ACLPG provides higher voltage reference accuracy and better temperature stability, making it suitable for more demanding applications such as precision power supplies or measurement circuits. Both devices use the same TO‑92‑3 three‑pin (long‑body) package, ensuring good physical compatibility without circuit modifications. Note, however, that the enhanced performance may come at a higher cost or under stricter procurement conditions, which could exceed the original design requirements in non‑critical applications.
Analysis ID: A23C-DBA8000
Based on part parameters and for reference only. Not to be used for procurement or production.
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