SA6N5WA-03 Replacement: 53AS105-K03N3, FMAT7461-3

Original Part

SA6N5WA-03

Fairview Microwave

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

Alternative Part

53AS105-K03N3

Rosenberger

RF Attenuators 3dB 0 Hz ~ 10 GHz 50 Ohms 5W N-Type In-Line Module

FMAT7461-3

Fairview Microwave

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

1. 53AS105-K03N3 Substitution Conclusion From a key electrical parameter standpoint, the 53AS105-K03N3 is a viable substitute for the original part. Its attenuation value (3dB), power handling capacity (5W), and impedance (50Ω) are identical. Furthermore, its frequency range (0-10 GHz) not only covers but exceeds the original part's 6 GHz upper limit. This ensures performance compatibility within the original sub-6 GHz band while extending high-frequency applicability. The primary difference lies in the manufacturer (Rosenberger replacing Fairview). This change may introduce subtle variations in interface mechanical tolerances, plating finish, or temperature stability. Therefore, it is recommended to validate connection compatibility and long-term reliability in the actual system, particularly the VSWR performance at higher frequencies. If the application frequency is within 6 GHz and strict interface interchangeability is required, physical testing is advised. For applications requiring extended high-frequency operation, this part offers a parametric advantage.

2. FMAT7461-3 Substitution Conclusion The FMAT7461-3 is an ideal direct replacement. As an upgraded product from the same manufacturer (Fairview Microwave), its core parameters—attenuation, power rating, and impedance—are a perfect match for the original part. Its frequency range is extended to 0-12.4 GHz, significantly increasing high-frequency performance margin. The sole difference from the original part is the elevated frequency ceiling. It guarantees equivalent performance in the original 6 GHz application scenarios while providing headroom for potential future system upgrades to higher frequency bands. Given the identical manufacturer, interface mechanical specifications and process consistency are high. RF characteristics such as insertion loss and VSWR are expected to align closely, mitigating compatibility concerns. This part can be directly substituted into existing designs.

Analysis ID: C7A6-B66D000

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