1. LCAT1002-07 Substitution Conclusion The LCAT1002-07 can serve as a replacement for the original part number FMAT7620-7, but only in applications where the operating frequency does not exceed 3 GHz. The key difference lies in the frequency range: the FMAT7620-7 supports 0 Hz to 18 GHz, whereas the LCAT1002-07 is limited to 0 Hz to 3 GHz. In applications involving frequencies above 3 GHz—such as microwave communications or high-frequency testing—the LCAT1002-07 will be unable to transmit signals effectively due to insufficient bandwidth, potentially leading to signal distortion or degraded equipment performance. However, within the 0–3 GHz range—including typical wireless communications and low-frequency testing—the two parts are fully compatible in terms of attenuation (7 dB), power handling (2 W), and interface (SMA feed‑through module), allowing direct substitution. The feasibility of replacement depends heavily on the specific frequency requirements of the system in question.