Original Part
Alternative Part
1. 32AS102-K20S3 Substitution Conclusion
From a core electrical parameter standpoint, the 32AS102-K20S3 can serve as a direct replacement for the FMAT7620-20. Both components share identical attenuation (20dB), impedance (50Ω), rated power (2W), and frequency range (DC-18 GHz). They also share the same SMA through-module form factor, indicating equivalent signal handling capability and power tolerance in the vast majority of RF signal chains. The primary distinction lies in the manufacturer change from Fairview Microwave to Rosenberger. Consequently, mechanical interface tolerances, plating finish, and long-term reliability are likely based on Rosenberger's standards. While physical installation compatibility is generally not an issue, verification of connector mating cycle life and intermodulation performance is recommended if the original system has stringent connector vendor matching requirements, such as in high-vibration environments.
2. SA3R-20 Substitution Conclusion
The SA3R-20 can only substitute for the FMAT7620-20 under limited conditions. While its attenuation, impedance, and power ratings are identical, a critical deviation exists in its frequency range, which is limited to DC-3 GHz—significantly narrower than the original part's DC-18 GHz. This part is suitable only for low-frequency applications below 3 GHz (e.g., cellular communications, FM broadcast). If deployed in higher frequency bands (e.g., Ku-band, radar systems), its attenuation accuracy and VSWR performance will degrade substantially, potentially leading to signal distortion or system instability. Substitution feasibility is entirely dependent on the actual operating frequency: replacement is viable only if the system's maximum operating frequency is ≤3 GHz; otherwise, it is not suitable.
Analysis ID: 2EF9-B5D3000
Based on part parameters and for reference only. Not to be used for procurement or production.
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