LCAT1006-20 Replacement: AT-120V, M3933/14-04S

Original Part

LCAT1006-20

L-com

RF Attenuators 20dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

AT-120V

Hirose Electric Co Ltd

RF Attenuators 20dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

M3933/14-04S

Amphenol SV Microwave

RF Attenuators 20dB 0 Hz ~ 12.4 GHz 50 Ohms 2W SMA In-Line Module

1. AT-120V Substitution Conclusion From a core electrical parameter perspective, the AT-120V is a viable direct replacement for the LCAT1006-20. Both components are identical in attenuation value (20dB), impedance (50Ω), power rating (2W), frequency range (DC-18GHz), and interface type (SMA In-Line Module). In the vast majority of RF signal chains, they can deliver equivalent signal attenuation, power handling, and bandwidth performance. There is no concern for system mismatch or performance degradation due to specification discrepancies.

2. M3933/14-04S Substitution Conclusion The M3933/14-04S has a clear technical limitation as a substitute and is only suitable for applications where the operating frequency does not exceed 12.4 GHz. The primary discrepancy lies in its upper frequency limit of 12.4 GHz, which is lower than the original part's 18 GHz. If the system operates between 12.4 GHz and 18 GHz, this part cannot guarantee key performance metrics such as attenuation accuracy and impedance matching. This could lead to signal distortion or degraded system performance, making it non-interchangeable in the higher frequency band.

Analysis ID: 2C75-E09F000

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