1. FMAT7620-6 Substitution Conclusion The FMAT7620-6 can fully replace the original part LCAT1001-06, as it not only matches all key parameters—including 6 dB attenuation, 2 W power handling, 50 Ω impedance, and SMA‑inline package—but also offers a wider frequency range (0 Hz to 18 GHz versus 0 Hz to 3 GHz for the original). In the original application scenario (≤3 GHz), the FMAT7620-6 performs comparably while extending usability into higher frequency bands, thereby improving versatility and future compatibility. It should be noted that operation at higher frequencies may involve slight cost or physical‑size trade‑offs, but for typical RF applications this substitution is both feasible and clearly advantageous.