Original Part
Alternative Part
1. SA6N5WA-03 Substitution Conclusion
The SA6N5WA-03 cannot fully replace the SA18N5WA-03; it is only suitable as a downgraded substitute within a limited frequency range. The key difference lies in the frequency coverage: the SA6N5WA-03 supports only 0–6 GHz, whereas the original part operates from 0–18 GHz. If the system operates above 6 GHz (e.g., in C‑band, X‑band, or Ku‑band applications), the SA6N5WA-03 cannot maintain its specified attenuation accuracy, impedance matching, or power handling capability. This may lead to signal distortion, increased reflection, or even equipment damage. Therefore, it should only be considered for low‑frequency scenarios where cost reduction or temporary replacement is required.
2. FMAT7624‑3 Substitution Conclusion
The FMAT7624‑3 can serve as a direct replacement for the SA18N5WA‑03. Their key parameters are identical: attenuation value (3 dB), frequency range (0–18 GHz), power rating (5 W), impedance (50 Ω), and connector type (N‑type inline module). Although the part numbering conventions differ and no grade or qualification information is indicated, both are equivalent‑specification products from the same manufacturer (Fairview Microwave). Their electrical performance and mechanical interfaces are fully interchangeable, meeting the original design’s attenuation requirements across the entire frequency band.
Analysis ID: ACD4-B481000
Based on part parameters and for reference only. Not to be used for procurement or production.
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