FMAT7466-7 Replacement: LCAT1000-07, LCAT1001-07

Original Part

FMAT7466-7

Fairview Microwave

RF Attenuators 7dB 0 Hz ~ 12 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

LCAT1000-07

L-com

RF Attenuators 7dB 0 Hz ~ 6 GHz 50 Ohms 2W SMA In-Line Module

LCAT1001-07

L-com

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

1. LCAT1000-07 Substitution Conclusion The LCAT1000-07 can serve as a downgraded substitute under limited conditions, but a strict assessment of the system frequency requirements is essential. The key difference lies in its frequency range (0–6 GHz), which is only half that of the original part (0–12 GHz). In the high‑frequency band from 6 GHz to 12 GHz, performance parameters such as attenuation accuracy and VSWR may degrade significantly or even become non‑functional, compromising signal integrity. If the application’s operating frequency is confirmed not to exceed 6 GHz and cost is a critical factor, substitution may be considered. Otherwise, for broadband or high‑frequency applications, this replacement introduces considerable performance risk.

2. LCAT1001-07 Substitution Conclusion The LCAT1001-07 is suitable only for low‑frequency scenario replacement; a general‑purpose substitution is not feasible. The fundamental difference is its substantially narrower frequency range (0–3 GHz) compared to the original part (0–12 GHz). It can operate reliably only below 3 GHz. Beyond this frequency, its attenuation value may deviate from the nominal 7 dB, and impedance matching deteriorates, leading to increased signal reflection and higher system insertion loss. This would severely impact the performance of mid‑to‑high‑frequency circuits. Unless the application band is strictly confined within 3 GHz, the original part cannot be replaced.

Analysis ID: B326-4C2C000

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