Original Part
Alternative Part
1. FMAT7467-9 Substitution Conclusion
The FMAT7467-9 matches the original SA18H-09 part in attenuation value, power handling, impedance, and interface configuration. Therefore, it can serve as a direct functional replacement for applications from DC up to 12 GHz. The primary distinction lies in the frequency range: the original part supports operation up to 18 GHz, whereas the FMAT7467-9 is limited to 12 GHz. If your system operates above 12 GHz (e.g., in Ku‑band applications), using the FMAT7467-9 will introduce additional insertion loss and performance degradation, potentially compromising signal integrity. Thus, it is only suitable for derated substitution in systems operating at or below 12 GHz.
2. SA6H-09 Substitution Conclusion
The SA6H-09 is identical to the original SA18H-09 in attenuation, power rating, impedance, and mechanical package. However, its operational frequency range is limited to 0–6 GHz, significantly lower than the original part’s 18 GHz upper limit. The SA6H-09 can only be safely and effectively used in RF circuits below 6 GHz (such as certain C‑band and lower applications). If deployed at higher frequencies, its attenuation will deviate substantially from the nominal 9 dB, impedance matching will degrade, and signal reflection will increase, leading to notable system performance deterioration. Consequently, it is strictly limited to low‑frequency substitution below 6 GHz and is not suitable for broadband or high‑frequency systems.
Analysis ID: 7EEC-0595000
Based on part parameters and for reference only. Not to be used for procurement or production.
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