Original Part
Alternative Part
1. SA3R-03 Substitution Conclusion
The SA3R-03 is a viable direct replacement for the original part number LCAT1001-03. Both share identical core electrical specifications, including 3dB attenuation, a DC-3GHz operating frequency, 2W power handling, and 50-ohm impedance. For the vast majority of test, system integration, or power protection applications at or below 3GHz, they are interchangeable with no performance degradation. The primary differences lie in the manufacturer brand (Fairview Microwave versus L-com) and the associated supply chain and post-sales support. These factors do not affect the device's electrical performance or mechanical form factor (both are SMA inline module types), confirming a high degree of substitutability.
2. FMAT1009 Substitution Conclusion
The FMAT1009 serves as an upgraded alternative to the original LCAT1001-03. Its key advantage is an extended operating frequency range from DC-3GHz to DC-6GHz, while maintaining the same 3dB attenuation, 2W power rating, and 50-ohm impedance. The FMAT1009 not only fully covers all application scenarios of the original part but is also capable of operating at higher frequencies (e.g., C-band), providing greater frequency margin and future upgrade flexibility for the system. Its mechanical interface remains an SMA inline module type, ensuring good physical compatibility. If cost permits and the system may involve higher frequency bands in the future, the FMAT1009 is the superior performance alternative.
Analysis ID: 7630-766E000
Based on part parameters and for reference only. Not to be used for procurement or production.
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