Original Part
Alternative Part
1. LCAT1002-03 Substitution Conclusion
Direct substitution is not feasible. The primary discrepancy lies in its frequency range, which is limited to 0-3 GHz, significantly lower than the original part's 18 GHz. At operating frequencies above 3 GHz—such as in common microwave bands like C, X, and Ku bands—the attenuation value of this device will deviate substantially from its nominal 3dB. Insertion loss will increase sharply, potentially causing impedance mismatch. This can degrade system signal integrity, introduce measurement errors, or lead to performance degradation. Consequently, it is only suitable for low-frequency applications below 3 GHz and cannot replicate the full-band functionality of the original part.
2. FMAT7620-3 Substitution Conclusion
Direct substitution is viable from an electrical performance perspective. Its key parameters—attenuation value (3dB), frequency range (0-18 GHz), power handling (2W), and impedance (50Ω)—are fully aligned with the original part. Under identical frequency and power conditions, it provides equivalent attenuation accuracy and signal processing capability. However, it is essential to verify the mechanical interface compatibility. The "SMA Male" connector on this unit must be checked against the "Plug-Jack" interface described for the original part. If there is any discrepancy in connector gender or mating style, physical connection would require an adapter or conversion cable. This would introduce additional insertion loss and potential instability into the link.
Analysis ID: 9493-2DE4000
Based on part parameters and for reference only. Not to be used for procurement or production.
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