1. Impedance Deviation: The new part exhibits an impedance of 80Ω@100MHz, compared to 100Ω@100MHz for the original version. This results in a slight reduction in high‑frequency noise suppression capability. In designs strictly reliant on 100Ω impedance for EMI filtering, the attenuation characteristics in the high‑frequency range may fall short of expectations. 2. DC Resistance (DCR) Difference: The new part has a DCR of 100mΩ, which is lower than the 150mΩ of the original part. The reduced DCR helps minimize voltage drop and power loss on signal traces, offering an advantage in current‑sensitive or low‑power applications. If the circuit allows relaxed impedance tolerance (e.g., ±20%) and the efficiency gain from lower DCR outweighs the minor degradation in noise suppression, substitution may be acceptable. However, in high‑frequency noise‑sensitive applications or where precise impedance matching is critical (such as high‑speed signal lines), it is recommended to either retain the original part or re‑validate the filter performance.