Original Part
Alternative Part
1. SA3R-03 Substitution Conclusion
From the perspective of core electrical and mechanical parameters, the SA3R-03 is a direct and perfect substitute for the original part LCAT1002-03. Both units are identical in attenuation value (3dB), frequency range (DC-3GHz), power handling capacity (2W), impedance (50Ω), and connector interface (SMA male-to-female feed-through module). Across the entire operating band from DC to 3GHz, their signal attenuation performance, power handling capability, and system matching will be indistinguishable. Furthermore, the physical mounting interfaces are directly compatible, requiring no circuit or mechanical modifications during replacement.
2. FMAT1009 Substitution Conclusion
The FMAT1009 offers an upward-compatible substitution for the original part LCAT1002-03, but the application's frequency requirements must be evaluated. The key difference lies in the extended frequency range, which is 6GHz for the FMAT1009 compared to 3GHz for the original part. For applications operating below 3GHz, the FMAT1009 can serve as a fully equivalent replacement and may provide additional frequency margin, potentially leading to superior system performance. However, if the actual application frequency does not exceed 3GHz, this broadband capability is redundant and may come at a higher cost. Its power handling capacity, impedance, and connector interface remain identical to the original part, ensuring reliability at the same power level and full mechanical compatibility.
Analysis ID: E8ED-DB67000
Based on part parameters and for reference only. Not to be used for procurement or production.
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