Original Part
Alternative Part
1. LCAT1001-08 Substitution Conclusion
Direct substitution is not feasible. The primary technical limitation of the LCAT1001-08 lies in its operational frequency range, which is limited to DC–3 GHz, whereas the original part SA18E-08 supports DC–18 GHz. Within the 3–18 GHz band, key performance parameters of the LCAT1001-08—including attenuation accuracy, impedance matching (VSWR), and power handling—cannot be guaranteed. This may lead to signal distortion, increased reflection, or even component failure in the system. Therefore, the LCAT1001-08 is suitable only for low-frequency applications below 3 GHz and cannot serve as a full-bandwidth replacement.
2. FMAT7620-8 Substitution Conclusion
Direct substitution is highly feasible. The FMAT7620-8 and the original SA18E-08 are from the same manufacturer (Fairview Microwave) and share identical core electrical specifications—8 dB attenuation, DC–18 GHz frequency range, 50‑ohm impedance, and 2 W power rating—as well as mechanical interface (SMA in‑line module). This indicates that the two parts should be electrically equivalent. Any differences are likely confined to part‑numbering conventions or minor commercial details (such as grade or qualification), which do not affect electrical functionality. Prior to implementation, it is recommended to verify the detailed datasheet of the FMAT7620-8 for final confirmation.
Analysis ID: 0D12-1359000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com