SA6S5W-03 Replacement: SA3S5W-03, FMAT7460-3

Original Part

SA6S5W-03

Fairview Microwave

RF Attenuators 3dB 0 Hz ~ 6 GHz 50 Ohms 5W SMA In-Line Module

Alternative Part

SA3S5W-03

Fairview Microwave

RF Attenuators 3dB 0 Hz ~ 3 GHz 50 Ohms 5W SMA In-Line Module

FMAT7460-3

Fairview Microwave

RF Attenuators 3dB 0 Hz ~ 12.4 GHz 50 Ohms 5W SMA In-Line Module

1. SA3S5W-03 Substitution Conclusion The SA3S5W-03 is not recommended as a direct substitute for the SA6S5W-03, as its operational frequency range (0-3 GHz) is only half that of the original part (0-6 GHz). Within the 3 GHz to 6 GHz band, key RF performance parameters of the SA3S5W-03—such as attenuation accuracy and VSWR—may degrade significantly or even fall out of specification. Consequently, it can only be considered a downgraded replacement for low-frequency applications not exceeding 3 GHz. This substitution is not viable for any system operating above 3 GHz.

2. FMAT7460-3 Substitution Conclusion The FMAT7460-3 is fully viable as a replacement for the SA6S5W-03 and represents a performance upgrade. Its primary advantage is a significantly extended frequency range from 0-6 GHz to 0-12.4 GHz, while maintaining identical key parameters including attenuation value, power handling capacity, and impedance. The FMAT7460-3 not only delivers equivalent performance across all operational frequencies of the original part but is also compatible with higher-frequency applications. This provides the system with greater frequency margin and future upgrade potential, making it an ideal forward-compatible replacement.

Analysis ID: 256A-0F56000

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