SA18T5W-10 Replacement: FMAT7462-10, FMAT7625-10

Original Part

SA18T5W-10

Fairview Microwave

RF Attenuators 10dB 0 Hz ~ 18 GHz 50 Ohms 5W TNC In-Line Module

Alternative Part

FMAT7462-10

Fairview Microwave

RF Attenuators 10dB 0 Hz ~ 12.4 GHz 50 Ohms 5W TNC In-Line Module

FMAT7625-10

Fairview Microwave

RF Attenuators 10dB 0 Hz ~ 18 GHz 50 Ohms 5W TNC In-Line Module

1. FMAT7462-10 Substitution Conclusion Direct substitution is not recommended. The FMAT7462-10 differs from the original part (SA18T5W-10) in that its frequency range is limited to 0–12.4 GHz, whereas the original supports 0–18 GHz. Within the high‑frequency band from 12.4 GHz to 18 GHz, the attenuation accuracy, impedance matching, and rated power capability of the FMAT7462-10 may not be guaranteed. If the application frequency covers this range, direct substitution could degrade system performance or cause failure.

2. FMAT7625-10 Substitution Conclusion Direct substitution is electrically feasible. The FMAT7625-10 matches the original part (SA18T5W-10) in all key specifications: attenuation (10 dB), frequency range (0–18 GHz), power rating (5 W), and impedance (50 Ω). The only notable difference is the mechanical interface description: the original part is clearly defined as a “Plug‑Jack” configuration, while the FMAT7625-10 is described as “TNC Male.” Physical compatibility must be verified to ensure the male connector mates properly with the corresponding female interface in the system. This difference does not affect electrical performance but determines physical connectivity.

Analysis ID: 5BE3-43F8000

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