SA18E-07 Replacement: LCAT1002-07, FMAT7620-7

Original Part

SA18E-07

Fairview Microwave

RF Attenuators 7dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

LCAT1002-07

L-com

RF Attenuators 7dB 0 Hz ~ 3 GHz 50 Ohms 2W SMA In-Line Module

FMAT7620-7

Fairview Microwave

RF Attenuators 7dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

1. LCAT1002-07 Substitution Conclusion Direct substitution is not recommended and should only be considered with careful evaluation in specific low‑frequency applications. The key difference lies in its frequency range (0–3 GHz), which is significantly narrower than that of the original part (0–18 GHz). The LCAT1002-07 can only guarantee performance up to 3 GHz. If used in the 3–18 GHz range, critical parameters such as attenuation and VSWR may deviate substantially from their nominal values, leading to signal distortion, increased reflection, and failure to meet the design requirements of broadband or high‑frequency circuits.

2. FMAT7620-7 Substitution Conclusion Full substitution feasibility is confirmed; this part is a direct and functionally equivalent replacement. Its key technical parameters—7 dB attenuation, 0–18 GHz frequency range, 2 W power handling, 50 Ω impedance—as well as its mechanical form (SMA inline module) are identical to those of the original part SA18E-07. Both are sourced from the same manufacturer (Fairview Microwave). The two parts exhibit high interchangeability in electrical performance, mechanical dimensions, and RF characteristics. No circuit modifications are required for direct replacement, and consistent system performance can be maintained across the entire operating frequency band.

Analysis ID: A68B-7394000

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