Original Part
Alternative Part
1. FMAT7466-3 Substitution Conclusion
The FMAT7466-3 can serve as a conditional replacement for the original part (32AS102-K03S3). Their core parameters—attenuation value (3 dB), power rating (2 W), impedance (50 Ω), and SMA interface—are identical. The primary difference lies in the frequency range: the original part supports 0–18 GHz, whereas the FMAT7466-3 supports 0–12 GHz. If your application operates at frequencies up to 12 GHz or lower—such as systems primarily covering C‑band, X‑band, and below—the FMAT7466-3 is fully compatible and can be used as a direct substitute. However, if the system involves frequencies between 12 GHz and 18 GHz (e.g., certain Ku‑band applications), the FMAT7466-3 is unsuitable due to its insufficient bandwidth. Before selecting it, verify the actual upper frequency limit of your system.
2. SA3R-03 Substitution Conclusion
The SA3R-03 has very limited feasibility as a replacement for the original part (32AS102-K03S3) and is only suitable for very low‑frequency scenarios. Although its basic parameters (3 dB, 2 W, 50 Ω, SMA) match, the key discrepancy is its frequency range of only 0–3 GHz, far below the original part’s 18 GHz. The SA3R-03 can operate stably only below 3 GHz—for example, in typical applications like cellular communications or Wi‑Fi 2.4 GHz. For any mid‑ to high‑frequency or microwave applications (such as radar, satellite communications, or high‑speed data transmission above 5 GHz), this attenuator would introduce unpredictable insertion loss and VSWR due to degraded frequency response, severely impacting system performance. Therefore, it should not be substituted unless the application is confirmed to be strictly limited to below 3 GHz.
Analysis ID: 0C74-952C000
Based on part parameters and for reference only. Not to be used for procurement or production.
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