1. FMAT7620-6 Substitution Conclusion The FMAT7620-6 can fully replace the original part LCAT1002-06 and represents a performance upgrade. The core parameters of both attenuators, including attenuation value (6dB), impedance (50Ω), rated power (2W), and connector type (SMA In-Line Module), are identical, ensuring direct compatibility in basic functionality. The difference lies in the frequency range: the original part supports DC‑3GHz, while the FMAT7620‑6 supports DC‑18GHz. The FMAT7620‑6 employs higher‑frequency circuit design and material processes. Within 3GHz, its performance—such as attenuation accuracy and VSWR—is typically superior to or at least equal to that of the original part, which was optimized only up to 3GHz. This provides equivalent or better performance assurance within the original application band while reserving sufficient bandwidth margin for potential future high‑frequency system requirements. This substitution is feasible both electrically and mechanically, offering potential performance improvements and greater system adaptability.