Original Part
120 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
100 Ohms @ 100 MHz 1 Power Line Ferrite Bead 0603 (1608 Metric) 3A 30mOhm
1. ACML-0603U-101B-T Substitution Conclusion
From a technical parameter perspective, the ACML-0603U-101B-T is identical to the original part WLBD1608HCU121TL in terms of rated current (3A), DC resistance (30mOhm), package (0603), and height (0.95mm). However, two primary differences exist: first, the impedance @ 100 MHz is reduced from 120 Ohms to 100 Ohms; second, the body length is slightly longer (1.65mm vs. 1.60mm). The lower impedance may result in marginally weaker suppression of high-frequency noise at 100 MHz, potentially affecting power rail filtering performance. This requires careful evaluation, especially in noise-sensitive applications. The dimensional difference, although minor (0.05mm), falls within the standard 0603 package tolerance. It is unlikely to significantly impact PCB layout or SMT compatibility, though the available mounting space should be verified. In summary, if the circuit design has a relaxed impedance tolerance (e.g., allowing ±20% variation) and the layout can accommodate the slight size deviation, this part can serve as a substitute. Otherwise, it is recommended to validate the filtering performance through actual measurement to ensure it meets requirements.
2. BBUP00160808101Y00 Substitution Conclusion
The BBUP00160808101Y00 matches the original WLBD1608HCU121TL exactly in rated current (3A), DC resistance (30mOhm), package (0603), height (0.95mm), and dimensions (1.60mm x 0.80mm). The sole critical difference is the impedance @ 100 MHz, which is reduced from 120 Ohms to 100 Ohms. This may lead to a slight degradation in noise attenuation at high frequencies (e.g., 100 MHz), affecting EMI filtering performance on the power line. However, if the circuit does not have stringent impedance requirements—such as in broadband filtering applications or where noise amplitude is low—this variance is generally acceptable. Given the high degree of consistency in mechanical and electrical parameters, substitution offers seamless compatibility for installation and DC characteristics. From an engineering practice standpoint, this part represents a more direct alternative. Nevertheless, it is advisable to conduct bench testing on the actual circuit to ensure the noise suppression performance remains within the design margin.
Analysis ID: D4B9-389A000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com