2. SA26B-09 Substitution Conclusion The feasibility conclusion for substituting the original LCAT1002-09 with the SA26B-09 aligns with that for the FMAT7466-9, but with an even greater performance margin. Its critical parameters (9dB, 50Ω, 2W, SMA) are a perfect match, satisfying the fundamental requirements for direct replacement. The core technical distinction from the original part is again the frequency range; the SA26B-09 supports an ultra-wideband of DC-26 GHz. This part employs more sophisticated high-frequency design and manufacturing techniques (e.g., use of high-performance substrates, more precise compensation structures) to achieve stable attenuation characteristics up into the millimeter-wave band. Within the original 3GHz application scenario, using this part not only guarantees performance but typically yields superior in-band performance metrics (such as attenuation accuracy and VSWR), resulting in very high system redundancy. This ultra-wideband capability generally comes at a higher cost. If the system has absolutely no possibility of operating at higher frequencies, this additional cost may not translate into tangible benefits.