SA3SR-10 Replacement: SA6-10, FMAT7466-10

Original Part

SA3SR-10

Fairview Microwave

RF Attenuators 10dB 0 Hz ~ 3 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

SA6-10

Fairview Microwave

RF Attenuators 10dB 0 Hz ~ 6 GHz 50 Ohms 2W SMA In-Line Module

FMAT7466-10

Fairview Microwave

RF Attenuators 10dB 0 Hz ~ 12 GHz 50 Ohms 2W SMA In-Line Module

1. SA6-10 Substitution Conclusion From a technical parameter perspective, the SA6-10 can fully replace the SA3SR-10. Both share identical attenuation (10 dB), power rating (2 W), impedance (50 Ω), and interface type (SMA module). The key difference lies in the frequency range: the SA6-10 supports 0–6 GHz, whereas the original part covers 0–3 GHz. The SA6-10 maintains its specified performance up to the higher band (3–6 GHz) while remaining fully backward compatible across the original part’s entire operating range. With equivalent power handling, it satisfies both electrical performance and mechanical compatibility requirements for direct substitution, and may offer additional bandwidth margin for wider applications.

2. FMAT7466-10 Substitution Conclusion The FMAT7466-10 also presents a technically viable direct replacement for the SA3SR-10. Its attenuation, power rating, impedance, and interface match those of the original part, but the frequency range is extended to 0–12 GHz, significantly beyond the original’s 3 GHz upper limit. This part is likely optimized for broader bandwidth performance in terms of high-frequency characteristics such as phase consistency and VSWR. Within the 0–3 GHz range, its performance is comparable to the original, while offering potential support for future system upgrades into microwave frequencies. Barring specific cost constraints, this part can be regarded as a high-performance alternative.

Analysis ID: EAFE-9FE0000

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