Original Part
120 Ohms @ 100 MHz 1 Ferrite Bead 0603 (1608 Metric) 1A 150mOhm
Alternative Part
120 Ohms @ 100 MHz 1 Power Line Ferrite Bead 0603 (1608 Metric) 1.2A 130mOhm
120 Ohms @ 100 MHz 1 Power Line Ferrite Bead 0603 (1608 Metric) 1.2A 130mOhm
1. LLMGG160808T121RG Substitution Conclusion
Based on core electrical parameters and physical dimensions, the LLMGG160808T121RG is a viable substitute for the original part. Key differences are: its rated current is increased from 1A to 1.2A, its DC resistance (DCR) is reduced from 150mΩ to 130mΩ, and it is explicitly designated for "Power Line" applications. With an identical impedance of 120Ω @ 100MHz, this part can handle a higher DC current while generating lower conduction voltage drop and thermal loss, resulting in superior electrical performance. Its "Power Line" designation indicates its design is optimized for power supply filtering, making it a more suitable choice if the original application was for power rail decoupling. Note: if the original design was for a signal line, its high-frequency attenuation curve must be verified for an exact match. Physically, its slightly lower profile (0.9mm vs. 1.0mm) offers better compatibility.
2. LSMGG160808T121RG Substitution Conclusion
The substitution conclusion for the LSMGG160808T121RG is identical to that for the LLMGG part above, as both share identical published parameter lists. They are likely part of the same series or carry different vendor codes. This part also features a higher rated current (1.2A), lower DCR (130mΩ), and is specifically designed for power line filtering, providing improved current-handling capability and lower DC loss as an electrical performance upgrade over the original part. Similarly, its slightly reduced height (0.9mm) poses no installation issues. When substituting, the same focus as with the LLMGG part applies: particular attention must be paid to verifying that its impedance-frequency curve matches the original part within the target frequency band, especially if used in high-frequency signal line applications.
Analysis ID: 74B2-5AB7000
Based on part parameters and for reference only. Not to be used for procurement or production.
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