1. FMAT7626-20 Substitution Conclusion The FMAT7626-20 can fully replace the original SA6S10W-20 part, as both share identical key parameters—attenuation value (20 dB), power rating (10 W), impedance (50 Ω), and package type. Moreover, the FMAT7626-20 offers a frequency range of DC to 18 GHz, which not only covers but significantly exceeds the original part’s DC to 6 GHz range. This enables superior broadband performance adaptability in high-frequency applications up to 18 GHz while maintaining equivalent performance in the lower frequency bands. The substitution not only meets all original application requirements but also extends usability to higher-frequency scenarios without introducing any performance degradation risks.