1. SA18S10W-10 Substitution Conclusion The SA18S10W-10 can serve as a complete drop-in replacement for the original FMAT7626-10. Both devices share identical core electrical specifications—a 10 dB attenuation value, 50 Ω impedance, and 10 W power handling—as well as the same frequency range (DC to 18 GHz). Their packaging is equivalent, utilizing SMA inline modules. Consequently, their RF performance, power handling capability, and suitability for broadband applications are considered functionally equivalent. The only minor distinction lies in the connector description: the SA18S10W-10 is noted as "PLUG-JACK SMA," whereas the original part is listed as "SMA MALE." This typically refers to the specific gender definition of the interface (e.g., plug/jack combination). While mechanical compatibility should be verified during physical interconnection, there is no fundamental difference in electrical characteristics. Therefore, the substitution is viable.