Original Part
Alternative Part
1. SA6S5W-03 Substitution Conclusion
The SA6S5W-03 matches the original FMAT7623-3 in key parameters—attenuation (3 dB), power rating (5 W), and impedance (50 Ω). However, the frequency range differs: the SA6S5W-03 supports only 0 Hz to 6 GHz, whereas the original part covers 0 Hz to 18 GHz. For applications operating at or below 6 GHz (e.g., common mid‑ to low‑band communication or test systems), the SA6S5W‑03 can serve as a viable substitute, providing identical attenuation and power‑handling within that range. In high‑frequency applications requiring up to 18 GHz (such as millimeter‑wave or wideband RF systems), the limited frequency range of the SA6S5W‑03 cannot guarantee performance and may introduce additional insertion loss or attenuation deviation, making it unsuitable as a replacement.
2. SA3S5W-03 Substitution Conclusion
The SA3S5W-03 aligns with the original FMAT7623-3 in attenuation (3 dB), power rating (5 W), and impedance (50 Ω). The critical distinction is its frequency range, which is limited to 0 Hz to 3 GHz—significantly lower than the original’s 0 Hz to 18 GHz. The SA3S5W‑03 is suitable only for low‑frequency applications (e.g., legacy wireless equipment or basic test circuits) where operation does not exceed 3 GHz. For any high‑frequency or wideband applications above 3 GHz (such as 5G, radar, or high‑speed data transmission), the restricted bandwidth of the SA3S5W‑03 prevents it from maintaining the specified attenuation characteristics, potentially leading to signal distortion or degraded performance; therefore, substitution is not feasible.
Analysis ID: E6C1-E99E000
Based on part parameters and for reference only. Not to be used for procurement or production.
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