Original Part
Alternative Part
1. 53AS105-K30N3 Substitution Conclusion
The 53AS105-K30N3 (manufactured by Rosenberger) matches the original part SA18N5WA-30 in attenuation (30 dB), power rating (5 W), impedance (50 Ω), and package (N‑type in‑line module). However, its frequency range is limited to 0 Hz–10 GHz, whereas the original supports 0 Hz–18 GHz. For applications operating at or below 10 GHz, this part can serve as a drop‑in replacement with no performance degradation. If the system handles signals between 10 GHz and 18 GHz—such as in high‑frequency communications, radar, or test systems—the narrower bandwidth will result in inadequate attenuation or degraded performance. Therefore, substitution is not recommended for high‑frequency applications, and the system’s frequency requirements must be carefully evaluated.
2. FMAT7461-30 Substitution Conclusion
The FMAT7461-30 (manufactured by Fairview Microwave) aligns with the original SA18N5WA-30 in attenuation (30 dB), power handling (5 W), impedance (50 Ω), and package (N‑type in‑line module). The key difference is its frequency range of 0 Hz–12.4 GHz, compared to the original’s 0 Hz–18 GHz. For applications below 12.4 GHz—including most wireless, satellite, and RF test scenarios—this part can be used as a direct substitute, maintaining signal integrity and power capability. If the system operates above 12.4 GHz, as in high‑frequency microwave or broadband systems, the limited frequency range may reduce attenuation accuracy or increase reflections, impacting overall performance. Hence, substitution feasibility depends on the specific frequency requirements of the application.
Analysis ID: 8DA3-95BE000
Based on part parameters and for reference only. Not to be used for procurement or production.
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