1. UPZ1608E101-3R0TF Substitution Conclusion This part can be considered as an alternative, but the substitution is not a simple, unconditional one-to-one replacement due to key parameter changes. The differences are as follows: the impedance is reduced from 120Ω @ 100MHz to 100Ω. This will result in a slight decrease in high-frequency noise suppression (attenuation) around the target frequency (100MHz). Conversely, the rated current is significantly increased from 1.5A to 3A, and the DC resistance (DCR) is notably lowered from 70mΩ to 30mΩ. Under the same operating current, this provides greater current-handling margin and generates lower voltage drop and heat due to its reduced self-power dissipation. If the original circuit has a stringent requirement for filtering efficacy specifically around 100MHz, this substitution may not meet the design specification. If the design priorities are higher current margin and lower loss performance, and it is less sensitive to minor changes in filtering characteristics, then this part represents a viable, performance-upgraded alternative (superior in current and DCR).