1. FMAT7626-10 Substitution Conclusion The FMAT7626-10 can serve as an electrical performance equivalent substitute for the SA18S10W-10; however, a critical mechanical interface incompatibility prevents a direct, seamless replacement. The core technical parameters of both parts—including attenuation value (10 dB), frequency range (DC–18 GHz), power handling capacity (10 W), and impedance (50 Ω)—are identical, ensuring equivalent attenuation performance and power handling within a circuit. The primary distinction lies in the interface configuration: the original SA18S10W-10 features a “Plug‑Jack” (male‑to‑female) structure, while the FMAT7626‑10 is specified as an “SMA Male” connector, meaning both ends are SMA plugs. If directly substituted, the FMAT7626‑10 cannot mate with the female ports anticipated in the original design. Adaptation would require either replacing cables or adding extra SMA female‑to‑female adapters. This increases connection complexity, may introduce additional insertion loss, and can compromise the mechanical stability of the system.