1. FMAT7620-9 Substitution Conclusion The FMAT7620-9 can fully replace the original part FMAT7467-9. Both parts share identical core performance parameters—9 dB attenuation, 50 Ω impedance, 2 W power handling, and package outline—ensuring full electrical and mechanical compatibility. The key difference lies in the frequency range: the FMAT7620-9 extends the operating frequency from 0–12 GHz to 0–18 GHz. While retaining all original functions, the newer part offers enhanced high‑frequency performance across a wider bandwidth. For applications operating below 12 GHz, this change has no impact and maintains design margin. Should the system later require expansion into the 12–18 GHz band, the FMAT7620‑9 provides immediate support. This substitution represents a feasible solution with equivalent or superior performance.