FMAT7461-3 Replacement: 53AS105-K03N3, SA6N5W-03

Original Part

FMAT7461-3

Fairview Microwave

RF Attenuators 3dB 0 Hz ~ 12.4 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

SA6N5W-03

Fairview Microwave

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

1. 53AS105-K03N3 Substitution Conclusion This part can serve as a conditional substitute for the original part. The core specifications—attenuation (3dB), impedance (50Ω), power rating (5W), and connector interface—are identical. The only deviation is a reduction in the upper frequency limit from 12.4 GHz to 10 GHz. Therefore, if the maximum operating frequency of your application does not exceed 10 GHz, this substitution is fully viable in terms of both electrical performance and mechanical compatibility. However, if the system operates within the 10 GHz to 12.4 GHz band (e.g., certain satellite communications or high-end test equipment applications), this substitute may result in undefined or failed attenuation performance in that range and is therefore not acceptable.

2. SA6N5W-03 Substitution Conclusion The feasibility of using this part as a substitute for the original is low, and it is only suitable for specific low-frequency scenarios. While its attenuation, impedance, power rating, and interface match the original, a critical difference is its significantly reduced upper frequency limit of 6 GHz. It can only guarantee the specified 3dB attenuation performance within the 0–6 GHz band. The original part's coverage from 6 GHz to 12.4 GHz—commonly used in C-band and X-band radar, point-to-point wireless links, and similar applications—will not be effectively supported. Substitution is not recommended unless it is confirmed that your application operates entirely below 6 GHz.

Analysis ID: 63AA-CA49000

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