Original Part
Alternative Part
1. FMAT7467-9 Substitution Conclusion
The FMAT7467-9 matches the original SA18E-09 in attenuation value (9 dB), power handling (2 W), impedance (50 Ω), and package (SMA in‑line module). However, its frequency range is limited to DC – 12 GHz, a reduction of 6 GHz compared to the original’s DC – 18 GHz. In applications involving signal processing above 12 GHz up to 18 GHz, the FMAT7467-9 will not provide effective attenuation, potentially leading to signal distortion or system failure. Therefore, it is suitable only for systems operating at or below 12 GHz. Any substitution must be preceded by a strict assessment of the actual frequency requirements.
2. SA6H-09 Substitution Conclusion
The SA6H-09 shares identical core parameters with the original SA18E-09—attenuation, power rating, impedance, and package. Nevertheless, its frequency range is restricted to DC – 6 GHz, well below the original’s 18 GHz upper limit. This limitation confines the SA6H-09 to low‑ or mid‑frequency applications (up to 6 GHz). In circuits operating above 6 GHz, it would introduce significant insertion‑loss variation or performance degradation, adversely affecting overall system performance. Consequently, the SA6H-09 can only serve as a substitute in scenarios where the frequency requirement does not exceed 6 GHz; otherwise, its use is not feasible.
Analysis ID: DCF0-FA60000
Based on part parameters and for reference only. Not to be used for procurement or production.
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