Original Part
100 Ohms @ 100 MHz 1 Power Line Ferrite Bead 0603 (1608 Metric) 3A 30mOhm
Alternative Part
100 Ohms @ 100 MHz 1 Power Line Ferrite Bead 0603 (1608 Metric) 3A 30mOhm
120 Ohms @ 100 MHz 1 Power Line Ferrite Bead 0603 (1608 Metric) 3A 30mOhm
1. UPZ1608E101-3R0TF Substitution Conclusion
From a core electrical parameter perspective, this part can serve as a direct substitute. Its impedance (100Ω @ 100MHz), rated current (3A), and maximum DC resistance (30mΩ) are identical to the original part. Consequently, its noise suppression capability around 100MHz on power lines, current-carrying capacity, and the resulting DC voltage drop and power dissipation are exactly the same as the original design. The deviation lies in its package length, which is slightly longer by 0.05mm (1.65mm vs. 1.60mm). In practice, this minor difference is typically within the pad tolerance for a 0603 footprint and can be accommodated during assembly. However, it is necessary to verify on the actual PCBA that sufficient clearance exists between this component and adjacent parts. Furthermore, under extreme mechanical stress, there could be a theoretical, minor difference in the bonding condition between its terminations and the solder pads.
2. WLBD1608HCU121TL Substitution Conclusion
This part can be considered as a substitute with similar parameters, but it exhibits a clear deviation in high-frequency filtering characteristics. The key difference is its increased impedance value of 120Ω @ 100MHz, which is 20% higher than the original part. At the same operating frequency of 100MHz, this results in stronger noise suppression and greater insertion loss. This change is a double-edged sword: it may be beneficial in applications requiring more aggressive filtering, but it could also shift the filter's impedance-frequency profile. This shift might cause unintended attenuation at other, non-target frequency points (e.g., at lower frequencies), potentially affecting signal integrity or power supply dynamic response. Therefore, a direct substitution should only be decided after evaluating the specific filtering requirements of the original circuit.
Analysis ID: 12D4-DE10000
Based on part parameters and for reference only. Not to be used for procurement or production.
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