FMAT7623-30 Replacement: SA3S5W-30, FMAT7460-30

Original Part

FMAT7623-30

Fairview Microwave

RF Attenuators 30dB 0 Hz ~ 18 GHz 50 Ohms 5W SMA In-Line Module

Alternative Part

SA3S5W-30

Fairview Microwave

RF Attenuators 30dB 0 Hz ~ 3 GHz 50 Ohms 5W SMA In-Line Module

FMAT7460-30

Fairview Microwave

RF Attenuators 30dB 0 Hz ~ 12.4 GHz 50 Ohms 5W SMA In-Line Module

1. SA3S5W-30 Substitution Conclusion Substitution is feasible, but only for low-frequency applications. The core difference between the SA3S5W-30 and the original part lies in its frequency range (0-3 GHz vs. 0-18 GHz). It can only guarantee its nominal 30 dB attenuation performance up to 3 GHz. If the operating frequency exceeds 3 GHz, its attenuation accuracy, impedance matching, and power handling capability may degrade significantly, failing to meet the original design's performance requirements across the full DC-18 GHz bandwidth. This part can only be considered as a lower-cost alternative when the system's maximum operating frequency is confirmed to be ≤3 GHz.

2. FMAT7460-30 Substitution Conclusion This is a viable and more performance-aligned substitute for most mid-to-high-frequency applications. The difference for the FMAT7460-30, similarly, is its frequency range (0-12.4 GHz vs. 0-18 GHz). Its performance cannot be guaranteed in the high-frequency band from 12.4 GHz to 18 GHz. For systems operating below 12.4 GHz—such as those in common sub-6 GHz WLAN or sub-12 GHz satellite communication bands—this part can provide broadband performance comparable to the original. However, this substitution is not suitable for systems involving Ku-band (12-18 GHz) applications.

Analysis ID: 5FDB-F541000

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