1. Operating Temperature Range: The PTVS28VP1UTP,115 specifies a wider nominal temperature range (-55°C to 185°C TA). This discrepancy stems from Rohm specifying junction temperature (TJ), while Nexperia specifies ambient temperature (TA). In practice, the Nexperia component may offer a greater operational margin in high-temperature environments, particularly in applications with constrained thermal design. 2. Supplier Device Package: Both devices share the same physical SOD-128 package. However, Nexperia provides a more specific internal package code (CFP5). There may be subtle differences in packaging materials, internal structure, or manufacturing processes between the two, potentially leading to minor variations in parasitic parameters (e.g., precise lead inductance). For protecting extremely high-speed signals (e.g., >1GHz), a final assessment should be made by consulting the detailed parasitic parameters in each component's respective datasheet. In summary, for general-purpose and automotive protection applications, the two devices can be considered equivalent substitutes.