LCAT1005-10 Replacement: SA6-10, FMAT7466-10

Original Part

LCAT1005-10

L-com

RF Attenuators 10dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

SA6-10

Fairview Microwave

RF Attenuators 10dB 0 Hz ~ 6 GHz 50 Ohms 2W SMA In-Line Module

FMAT7466-10

Fairview Microwave

RF Attenuators 10dB 0 Hz ~ 12 GHz 50 Ohms 2W SMA In-Line Module

1. SA6-10 Substitution Conclusion The SA6-10 cannot be used as a direct drop-in replacement for the LCAT1005-10. It is only suitable for applications where the operating frequency is definitively below 6 GHz. The core difference lies in the frequency range: the original part covers DC-18 GHz, whereas the SA6-10 only supports DC-6 GHz. In the high-frequency band from 6 GHz to 18 GHz, key performance parameters of the SA6-10—such as attenuation accuracy, impedance matching, and VSWR—will degrade significantly or become non-compliant. If the system signal frequency falls within this range, substitution will lead to signal distortion, increased reflection, and compromised performance of the entire RF chain.

2. FMAT7466-10 Substitution Conclusion The FMAT7466-10 can serve as a conditional replacement for the LCAT1005-10, applicable in systems operating below 12 GHz. The primary variance is again the frequency range. The FMAT7466-10 supports DC-12 GHz, which is an improvement over the SA6-10 but still falls short of the original part's full DC-18 GHz bandwidth. Substitution in the 12 GHz to 18 GHz band carries a similar risk of high-frequency performance degradation as with the SA6-10. Prior to substitution, it is essential to verify that the system's maximum operating frequency does not exceed 12 GHz; otherwise, performance specifications cannot be guaranteed in the upper frequency range.

Analysis ID: B607-0EA5000

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