AT-106V Replacement: FMAT1011, LCAT1005-06

Original Part

AT-106V

Hirose Electric Co Ltd

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

Alternative Part

FMAT1011

Fairview Microwave

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

LCAT1005-06

L-com

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

1. FMAT1011 Substitution Conclusion The FMAT1011 can serve only as a limited substitute for the original part, applicable exclusively in frequency bands below 6 GHz. The core difference lies in its frequency range of 0–6 GHz, which is significantly narrower than the original part's 0–18 GHz. In applications from 6 GHz to 18 GHz, key performance metrics of this attenuator—such as attenuation accuracy and VSWR—may degrade substantially or even fall out of specification. Therefore, it is suitable only for systems with a confirmed operating frequency below 6 GHz and is not recommended for broadband or high-frequency scenarios.

2. LCAT1005-06 Substitution Conclusion The LCAT1005-06 is a fully viable direct replacement for the original part. Both devices share identical core electrical specifications, including 6 dB attenuation, a broadband frequency range of DC–18 GHz, 2W power handling capability, and 50‑ohm impedance. The mechanical interface is also the same, utilizing an SMA inline module. Across the entire band from DC to 18 GHz, the LCAT1005-06 delivers equivalent attenuation performance and power handling as the original part, allowing for a direct substitution without compromising system RF performance.

Analysis ID: D8D8-FF9B000

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