Original Part
120 Ohms @ 100 MHz 1 Power Line Ferrite Bead 0603 (1608 Metric) 2A 55mOhm
Alternative Part
120 Ohms @ 100 MHz 1 Power Line Ferrite Bead 0603 (1608 Metric) 2A 50mOhm
100 Ohms @ 100 MHz 1 Power Line Ferrite Bead 0603 (1608 Metric) 3A 30mOhm
1. PZ1608U121-2R0TF Substitution Conclusion
This part is a viable substitute. The PZ1608U121-2R0TF matches the original HPZ1608U121-2R0TF in all key filtering parameters—impedance vs. frequency, package size, and current rating. The only difference is an improved DC resistance (DCR), reduced from 55 mΩ to 50 mΩ. Under the same DC load current, the substitute will exhibit slightly lower power dissipation and temperature rise. This constitutes a positive performance enhancement, benefiting power integrity and efficiency without adverse effects. Therefore, it is a feasible and superior drop-in replacement.
2. UPZ1608E101-3R0TF Substitution Conclusion
Substitution requires careful evaluation and is not fully equivalent. Three key differences exist between this part and the original: first, the impedance at 100 MHz is reduced from 120 Ω to 100 Ω, slightly weakening noise suppression within the target frequency band; second, the rated current is increased from 2 A to 3 A, while the DCR is significantly lowered from 55 mΩ to 30 mΩ, enabling higher operating current with reduced DC voltage drop and thermal loss; third, the package length is slightly increased (1.65 mm vs. 1.60 mm). If the original design strictly requires 120 Ω impedance at 100 MHz, substitution is not recommended. However, if the circuit demands higher current or lower DCR, the reduced impedance is acceptable, and PCB space permits, this part can serve as a higher-performance alternative.
Analysis ID: E8DC-A645000
Based on part parameters and for reference only. Not to be used for procurement or production.
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