SA18T5W-30 Replacement: FMAT7462-30, FMAT7625-30

Original Part

SA18T5W-30

Fairview Microwave

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

Alternative Part

FMAT7462-30

Fairview Microwave

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

FMAT7625-30

Fairview Microwave

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

1. FMAT7462-30 Substitution Conclusion The FMAT7462-30 is not suitable for direct replacement of the original SA18T5W-30 part. While key parameters such as attenuation, power rating, and impedance are identical, a critical difference lies in the frequency range: the FMAT7462-30 only supports 0–12.4 GHz, whereas the original part covers 0–18 GHz. If the application involves operation between 12.4 GHz and 18 GHz, substitution would result in inadequate high‑frequency attenuation performance or outright failure, potentially leading to degraded system performance or compatibility issues. Therefore, this substitute is only appropriate in applications where the operating frequency is confirmed to remain below 12.4 GHz.

2. FMAT7625-30 Substitution Conclusion The FMAT7625-30 presents a high feasibility for direct replacement of the original SA18T5W-30 part. Both devices share identical technical specifications, including 30 dB attenuation, full 0–18 GHz frequency coverage, 5W power handling capability, 50‑ohm impedance, and TNC coaxial interfaces. This close parametric match ensures equivalent attenuation accuracy, power handling, and impedance matching across all specified frequency bands after substitution. No concerns regarding electrical performance or physical‑connection compatibility are expected, making it suitable for broadband applications with strict frequency‑range requirements.

Analysis ID: 5417-2104000

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