1. FMAT7626-20 Substitution Conclusion The FMAT7626-20 can serve as a complete drop-in replacement for the original FMAT7463-20, constituting a direct upgrade. Both parts share identical core performance parameters—20 dB attenuation, 50 Ω impedance, 10 W power handling, and package form factor—ensuring full electrical compatibility and mechanical interchangeability. The key difference lies in the extended frequency range of the new FMAT7626-20, which covers DC to 18 GHz, compared to the original part's DC to 12.4 GHz. The new version offers superior high-frequency performance, fully covering and exceeding the operational bandwidth of the original part. It maintains specified attenuation accuracy and power rating up to 18 GHz, providing additional frequency margin and future upgrade potential for the system. When used within the original system’s frequency range (≤12.4 GHz), no performance degradation will occur.