1. FMAT7620-8 Substitution Conclusion The FMAT7620-8 is fully capable of replacing the original part FMAT7466-8. The key performance parameters of both attenuators—including an 8 dB attenuation value, 2 W power handling, and 50 Ω impedance—are identical. Their mechanical compatibility is ensured by the same SMA feed‑through module package. The only difference lies in the operating frequency range: the FMAT7466‑8 covers 0–12 GHz, while the FMAT7620‑8 extends the upper limit to 0–18 GHz. With its superior high‑frequency margin and wider bandwidth, the FMAT7620‑8 will deliver equivalent or better electrical performance within the original design’s operating band (≤12 GHz). This difference does not hinder the substitution; instead, it offers additional headroom for potential high‑frequency applications or system performance margin. Provided the connector gender is verified (the “JACK‑PLUG” notation may refer to a male‑female combination; confirm the exact connector type of the FMAT7620‑8 to ensure physical mating compatibility), direct substitution is feasible.