Original Part
Alternative Part
1. FMAT1011 Substitution Conclusion
The FMAT1011 can only be used as a temporary or downgraded substitute in applications below 6 GHz. Its primary limitation lies in its frequency range (0–6 GHz), which is significantly narrower than the original part’s upper limit of 18 GHz. Within the 6–18 GHz band, this attenuator cannot guarantee normal attenuation performance and impedance matching, potentially leading to signal reflection, abnormal insertion loss, or device damage. Therefore, it is suitable only for low‑frequency scenarios, and system bandwidth requirements must be strictly evaluated.
2. LCAT1005‑06 Substitution Conclusion
The LCAT1005‑06 matches the original part in all key parameters—attenuation value (6 dB), frequency range (0–18 GHz), power rating (2 W), impedance (50 Ω)—and mechanical interface (SMA inline module). In theory, it is a viable direct substitute. However, it should be noted that products from different manufacturers may exhibit slight variations in detailed performance characteristics, such as VSWR tolerance, temperature stability, and phase linearity. It is recommended to perform verification testing in the actual system to ensure compliance with performance requirements, particularly at higher frequencies.
Analysis ID: C158-98CE000
Based on part parameters and for reference only. Not to be used for procurement or production.
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