Original Part
Alternative Part
1. SA18S5W-03 Substitution Conclusion
This component is a fully qualified substitute. The SA18S5W-03 is identical to the original SA6S5W-03 part in all key specifications: attenuation value (3dB), impedance (50Ω), power rating (5W), and interface type (SMA In-Line Module). The core enhancement is its extended frequency range of 0-18 GHz, which significantly surpasses the original part's 6 GHz upper limit. The SA18S5W-03 provides complete coverage and superior performance across the higher frequency spectrum. Its electrical characteristics remain fully compatible within the 0-6 GHz range. Therefore, it can be used as a direct drop-in replacement and is suitable for higher-frequency applications without any derating or performance risk.
2. FMAT7623-3 Substitution Conclusion
Substitution is viable from an electrical performance standpoint, but mechanical interface compatibility requires verification. The FMAT7623-3 matches and extends the key electrical parameters of the original part: attenuation (3dB), frequency range (0-18 GHz), power rating (5W), and impedance (50Ω). However, its description specifies "SMA MALE," whereas the original part is listed as "PLUG-JACK" (typically indicating one plug and one jack end). This suggests a potential physical gender mismatch (male/female) in the connectors. While the circuit performance meets or exceeds requirements, direct installation may face interface incompatibility. Prior to substitution, it is essential to verify the required interface types in the actual signal chain or prepare appropriate adapters.
Analysis ID: 03AF-2135000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com