FMAT1009 Replacement: LCAT1002-03, FMAT7620-3

Original Part

FMAT1009

Fairview Microwave

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

Alternative Part

LCAT1002-03

L-com

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

FMAT7620-3

Fairview Microwave

RF Attenuators 3dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

1. LCAT1002-03 Substitution Conclusion The LCAT1002-03 is only a partially viable substitute and requires careful evaluation of the application frequency. Its key difference from the original FMAT1009 part lies in its upper frequency limit of only 3 GHz, which is significantly lower than the original's 6 GHz. If the actual operating frequency exceeds 3 GHz, this attenuator will introduce insertion loss and mismatch substantially higher than the nominal values. This can lead to inaccurate signal attenuation, degraded system performance, and even potential damage to downstream sensitive components. Therefore, it is suitable only for direct replacement in low-frequency applications below 3 GHz.

2. FMAT7620-3 Substitution Conclusion The FMAT7620-3 is a fully feasible and high-performance alternative. Its difference from the original FMAT1009 part is an extended upper frequency range of 18 GHz, far exceeding the original's 6 GHz. This part maintains excellent attenuation accuracy and impedance matching across the entire operational frequency band of the original part. Furthermore, it offers wider frequency margin, which can enhance system stability and reliability in broadband applications. It represents an ideal substitute option, as its performance parameters fully cover and surpass those of the original.

Analysis ID: 30A8-5EE5000

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