Original Part
Alternative Part
1. TL431BILPRAG Substitution Conclusion
From both electrical performance and packaging perspectives, the TL431BILPRAG is a highly compatible, drop-in replacement for the TL1431CLPME3. The primary differences are as follows: First, its typical reference voltage is 2.495V (versus 2.5V for the original part). However, this value remains within the shared ±0.4% tolerance specification for both devices. For the vast majority of applications, this 5mV nominal difference is negligible. Second, the TL431BILPRAG specifies a typical temperature coefficient of 50ppm/°C, a parameter not explicitly stated for the original part. For applications across a wide temperature range, the OnSemi part provides a predictable drift characteristic, offering clearer stability performance. Both devices utilize the standard TO-92-3 package and are pin-compatible, allowing for direct soldering.
2. TL431BVLPRAG Substitution Conclusion
The TL431BVLPRAG can serve as a direct electrical replacement for the TL1431CLPME3, but physical compatibility requires attention. Its core electrical specifications (2.495V reference, ±0.4% tolerance, 50ppm/°C temperature drift, 100mA current capability) are identical to those of the TL431BILPRAG, leading to the same electrical substitution conclusion. The critical distinction lies in its package description: "TO-92-3 Long Body." Its molded body length may be greater than that of a standard TO-92-3 (or TI's TO-226AA) package. In applications with dense PCB layouts or restricted enclosure space, this could pose a risk of mechanical interference. It is essential to verify sufficient clearance prior to replacement installation.
Analysis ID: 65FB-8FBA000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com