FMAT1010 Replacement: LCAT1002-03, FMAT7620-3

Original Part

FMAT1010

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 can serve as a conditional substitute for the original FMAT1010. The core difference lies in the frequency range: the original part covers 0-6 GHz, while the LCAT1002-03 is limited to 0-3 GHz. If your application operates below 3 GHz, the LCAT1002-03 is compatible in terms of attenuation value, power handling, and interface, allowing for a direct drop-in replacement. However, if the system frequency exceeds 3 GHz, this part cannot guarantee the specified 3dB attenuation accuracy and impedance matching. This may lead to signal distortion and increased reflection, thereby degrading system performance. Therefore, substitution is not recommended under such conditions.

2. FMAT7620-3 Substitution Conclusion The FMAT7620-3 is a high-performance, direct replacement for the original FMAT1010. The key difference, again, is the frequency range: the FMAT7620-3 supports up to 18 GHz, fully covering and exceeding the original part's 6 GHz upper limit. Within the original part's 0-6 GHz operating band, the FMAT7620-3 provides equivalent or superior electrical performance, such as a flatter attenuation curve and better VSWR, demonstrating full downward compatibility with ample margin. It is a direct substitute in both electrical performance and mechanical interface (both SMA), though typically at a higher cost.

Analysis ID: 2ADE-4537000

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