SA18SS-06 Replacement: LCAT1001-06, FMAT7620-6

Original Part

SA18SS-06

Fairview Microwave

RF Attenuators 6dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

LCAT1001-06

L-com

RF Attenuators 6dB 0 Hz ~ 3 GHz 50 Ohms 2W SMA In-Line Module

FMAT7620-6

Fairview Microwave

RF Attenuators 6dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

1. LCAT1001-06 Substitution Conclusion Direct substitution is not recommended. Although both parts share identical attenuation value, power handling, and interface form factor, the frequency range of the LCAT1001-06 is limited to DC–3 GHz, which is significantly narrower than the original part’s DC–18 GHz. In the high-frequency band from 3 GHz to 18 GHz, key performance parameters such as attenuation accuracy, impedance matching, and VSWR cannot be guaranteed. This may lead to signal distortion and increased reflection in the system. Therefore, this part is suitable only for low-frequency applications and cannot serve as a full-bandwidth replacement.

2. FMAT7620-6 Substitution Conclusion Direct substitution is acceptable. This part matches the original in all core specifications, including 6 dB attenuation, DC–18 GHz broadband operation, 2W power rating, and 50‑ohm impedance. Belonging to the same manufacturer series ensures consistent performance and reliability. The interface is also SMA In-Line module type, allowing direct mechanical and electrical compatibility without circuit or mechanical redesign. It is an ideal drop‑in replacement.

Analysis ID: 6780-F0AE000

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