FMAT7466-3 Replacement: SA3R-03, FMAT1009

Original Part

FMAT7466-3

Fairview Microwave

RF Attenuators 3dB 0 Hz ~ 12 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

SA3R-03

Fairview Microwave

RF Attenuators 3dB 0 Hz ~ 3 GHz 50 Ohms 2W SMA In-Line Module

FMAT1009

Fairview Microwave

RF Attenuators 3dB 0 Hz ~ 6 GHz 50 Ohms 2W SMA In-Line Module

1. SA3R-03 Substitution Conclusion The SA3R-03 cannot serve as a direct drop-in replacement for the FMAT7466-3. The key difference lies in the operating frequency range: the original part supports DC-12 GHz, whereas the SA3R-03 is only rated for DC-3 GHz. If the application circuit operates above 3 GHz, the SA3R-03 will not function correctly. Critical parameters such as attenuation value and impedance matching will deviate significantly from their nominal specifications. This can lead to signal distortion, increased reflections, potential damage to preceding circuit stages, or overall system performance degradation.

2. FMAT1009 Substitution Conclusion The FMAT1009 can be used as a conditional substitute for the FMAT7466-3, but its suitability is entirely dependent on the specific application frequency. The core difference, again, is the frequency range: the FMAT1009 supports DC-6 GHz, while the original part extends to 12 GHz. Within the 0-6 GHz band, the FMAT1009 will operate normally and maintain performance. However, for any application operating between 6 GHz and 12 GHz, the FMAT1009 is completely unsuitable, as its performance will degrade sharply and fail to meet system requirements. This substitution is only viable if the system's maximum operating frequency is confirmed to be ≤6 GHz.

Analysis ID: F278-9A20000

Based on part parameters and for reference only. Not to be used for procurement or production.