Original Part
Alternative Part
1. FMAT7462-3 Substitution Conclusion
The FMAT7462-3 is not a direct drop-in replacement for the original part, SA18T5W-03. The key discrepancy lies in its frequency range, which is limited to a maximum of 12.4 GHz, whereas the original component supports operation up to 18 GHz. Within the 12.4 GHz to 18 GHz band, the performance of the FMAT7462-3—specifically its attenuation accuracy and VSWR—cannot be guaranteed and is likely to degrade significantly. Consequently, this substitute is suitable only for systems operating at or below 12.4 GHz. Its use in higher-frequency applications would introduce unacceptable signal integrity risks.
2. FMAT7625-3 Substitution Conclusion
The FMAT7625-3 presents a highly viable direct replacement for the original SA18T5W-03. Their core electrical parameters are identical, including a 3dB attenuation value, a frequency range of 0-18 GHz, a 5W power handling capability, and a 50-ohm impedance. The primary differences are confined to the part number and descriptive information. The FMAT7625-3 documentation does not explicitly specify performance grade (e.g., commercial, military) or qualification status (e.g., space-level). Therefore, provided that your application does not mandate specific military (MIL-PRF-…) or space-level certifications, and general electrical specifications are the sole requirement, the FMAT7625-3 can be considered a functional and performance-equivalent substitute.
Analysis ID: 056F-A0E1000
Based on part parameters and for reference only. Not to be used for procurement or production.
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