FMAT1012 Replacement: LCAT1001-06, FMAT7620-6

Original Part

FMAT1012

Fairview Microwave

RF Attenuators 6dB 0 Hz ~ 6 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 The LCAT1001-06 is not a direct substitute for the original part FMAT1012. The key difference lies in its operational frequency range, which is limited to DC–3 GHz, whereas the original part supports DC–6 GHz. In the frequency band from 3 GHz to 6 GHz, the attenuation of the LCAT1001-06 may deviate significantly from the nominal 6 dB, leading to impedance mismatch, degraded VSWR, and consequently unacceptable signal distortion and return loss. Therefore, this part is suitable only for low-frequency applications where the operating frequency does not exceed 3 GHz.

2. FMAT7620-6 Substitution Conclusion The FMAT7620-6 can serve as a high-performance drop‑in replacement. Its primary technical advantage is an extended operating frequency range of DC–18 GHz, which fully covers and exceeds the original part’s DC–6 GHz requirement. Across the entire 6 GHz bandwidth needed by the original design, this part provides improved and more stable attenuation accuracy, lower VSWR, and better impedance matching. This ensures system reliability and signal integrity both within the original frequency band and at higher frequencies, making it an upward‑compatible substitution option.

Analysis ID: 6711-46FB000

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