FMAT1010 Replacement: FMAT7466-3, SA3R-03

Original Part

FMAT1010

Fairview Microwave

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

Alternative Part

FMAT7466-3

Fairview Microwave

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

SA3R-03

Fairview Microwave

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

1. FMAT7466-3 Substitution Conclusion The FMAT7466-3 serves as a perfect, performance-upgraded substitute for the original FMAT1010. Both parts share identical core specifications: attenuation (3dB), impedance (50Ω), power handling (2W), and package (SMA inline module). However, the FMAT7466-3 offers a significantly wider frequency range of 0 Hz to 12 GHz, compared to the original part's 6 GHz. This substitution ensures the attenuator maintains its nominal 3dB attenuation and good impedance matching up to 12 GHz. It thereby provides greater frequency margin for the system, extends suitability to higher-frequency applications, and introduces no performance degradation within the original design's ≤6 GHz operating band.

2. SA3R-03 Substitution Conclusion The SA3R-03 can substitute for the original FMAT1010 only under limited conditions and represents a performance-downgrade, requiring rigorous evaluation. While its attenuation, impedance, power rating, and package match the original, a critical distinction is its operational frequency range of only 0 Hz to 3 GHz, which is substantially narrower than the original's 6 GHz. If the host circuit operates above 3 GHz, the SA3R-03 cannot guarantee specified attenuation accuracy and impedance characteristics. This may lead to serious issues such as signal distortion and increased reflections (degraded VSWR). This substitution is viable only if the actual application frequency is confirmed to remain consistently below 3 GHz; otherwise, it poses a significant system risk.

Analysis ID: 7F3D-AF28000

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