SA6S10W-06 Substitution Conclusion The SA6S10W-06 can serve only as a limited substitute for the original FMAT7626-6 part. The core limitation of this substitution lies in the operating frequency range. Both parts are fully consistent in key parameters such as attenuation value (6 dB), impedance (50 Ω), power rating (10 W), and connector type (SMA male). However, the frequency range of the SA6S10W-06 (0–6 GHz) is only one-third that of the original part (DC–18 GHz). If the actual operating frequency of the application circuit remains within 6 GHz, the SA6S10W-06 can be considered a fully equivalent replacement. Once the operating frequency exceeds 6 GHz, the SA6S10W-06 cannot guarantee its specified 6 dB attenuation accuracy and 50 Ω impedance matching performance. This may lead to system signal distortion, increased reflection, or degraded performance. Therefore, it is not a viable substitute in this higher frequency range.