SA6-03 Replacement: FMAT7466-3, SA3R-03

Original Part

SA6-03

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 is fully compliant with the original SA6-03 part in all core electrical parameters (attenuation value, power handling, impedance) and mechanical interface (SMA In-Line Module). However, its frequency range (0-12 GHz) is significantly wider than the original's 0-6 GHz. The FMAT7466-3 not only covers but exceeds the application scope of the SA6-03. It will provide superior frequency response and performance consistency in systems operating up to 12 GHz. Therefore, it serves as a direct, performance-enhanced drop-in replacement for the SA6-03. Substitution will not degrade system performance and may provide additional bandwidth margin.

2. SA3R-03 Substitution Conclusion The SA3R-03 matches the original SA6-03 in key parameters such as attenuation value, power rating, and impedance. However, its maximum operating frequency (0-3 GHz) is only half that of the original part (0-6 GHz). This is a critical limitation. The SA3R-03 cannot be used in any circuit or test scenario where the operating frequency exceeds 3 GHz. If forced as a replacement in the 3-6 GHz band, it will lead to degraded attenuation accuracy, worsened VSWR, and potential signal distortion. It is only suitable as a substitute in applications explicitly confined to 3 GHz or below. For any system originally designed to operate up to 6 GHz, it is an incompatible and inferior downgrade.

Analysis ID: 0B15-538A000

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