1. MH1608-101Y Substitution Conclusion Direct substitution is not fully recommended and should be evaluated with caution. While its package, dimensions, and rated current (3A) are superior to the original part, a key difference lies in its impedance value (100 Ohms @ 100 MHz), which is approximately 16.7% lower than the original (120 Ohms). Consequently, near the same target frequency of 100MHz, its filtering (noise attenuation) performance will be weaker than the original design, potentially compromising high-frequency noise suppression in the circuit. Substitution may only be considered for power line applications where filtering precision is less critical and the focus is on its high current rating and low DC resistance (40mOhm) characteristics.