Original Part
Alternative Part
1. SA6-09 Substitution Conclusion
The SA6-09 is not a general-purpose or direct substitute for the original FMAT7620-9. While both share identical attenuation (9dB), power rating (2W), and interface (SMA In-Line), a critical discrepancy exists in the operational frequency range: the SA6-09 is limited to 0-6 GHz, whereas the original part supports frequencies up to 18 GHz. Within the 6 GHz to 18 GHz band—commonly used in microwave communications, satellite, and radar applications—the SA6-09 will not function properly. Its performance in terms of attenuation accuracy, VSWR, and other key parameters will degrade significantly or fail entirely. Consequently, its use is restricted to low-frequency applications only.
2. SA18H-09 Substitution Conclusion
The SA18H-09 is a viable substitute for the original FMAT7620-9. Both components are identical in all core electrical specifications, including attenuation (9dB), frequency range (0-18 GHz), power rating (2W), and impedance (50Ω). The physical interface is also the same (SMA In-Line Module), ensuring electrical performance and mechanical compatibility in the vast majority of RF links. Although minor mechanical differences may be noted in its description (e.g., "SS 1.35" may refer to housing material or dimensions), these typically do not preclude its direct drop-in replacement in standard applications.
Analysis ID: 5B4E-0B78000
Based on part parameters and for reference only. Not to be used for procurement or production.
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