1. LM86CIMM/NOPB Substitution Conclusion Direct substitution carries significant risk and is not recommended. Key differences are as follows: First, the operating temperature range is severely limited. The LM86 supports only 0°C to 85°C for both local and remote temperature sensing, whereas the EMC1402 supports -40°C to 125°C locally and -64°C to 191°C remotely. In applications with low or high ambient temperatures—particularly at remote sensing points such as a CPU—the LM86 will either fail to operate or become unreliable. Second, accuracy is significantly reduced. The LM86 has a typical accuracy of ±3°C, far worse than the EMC1402’s ±1°C. This increases inaccuracy in system temperature monitoring and protection thresholds, compromising reliability. Third, resolution differs: the LM86 offers only 7‑bit resolution for local temperature measurement, compared to the EMC1402’s 11‑bit resolution, resulting in coarser local temperature readings. Substitution could directly cause system malfunction under expected operating conditions and degrade temperature‑control precision. It may be considered only after confirming that the application environment remains consistently mild (0–85°C) and has no stringent requirements for accuracy or resolution.