M3933/30-03N Replacement: FMAT7467-1, LCAT1005-01

Original Part

M3933/30-03N

Amphenol SV Microwave

RF Attenuators 1dB 0 Hz ~ 32 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

FMAT7467-1

Fairview Microwave

RF Attenuators 1dB 0 Hz ~ 12 GHz 50 Ohms 2W SMA In-Line Module

LCAT1005-01

L-com

RF Attenuators 1dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

1. FMAT7467-1 Substitution Conclusion Based on a comparison of key technical parameters, the usable frequency range of the FMAT7467-1 is limited to DC–12 GHz, which is significantly lower than that of the original part (DC–32 GHz). If the application involves frequency bands above 12 GHz (such as high‑frequency communications or millimeter‑wave testing), this part cannot guarantee performance and may lead to signal distortion or excessive attenuation error. On the other hand, its attenuation value (1 dB), power rating (2 W), and connector type (SMA) match the original specifications. Therefore, it can be considered a direct substitute for applications below 12 GHz, provided the system’s frequency boundary conditions are strictly evaluated.

2. LCAT1005-01 Substitution Conclusion The frequency range of the LCAT1005-01 is DC–18 GHz. Although this exceeds that of the FMAT7467-1, it still falls short of the original part’s upper limit of 32 GHz. This indicates that performance in the 18–32 GHz band may not be verified, introducing risks such as attenuation fluctuation or degraded VSWR. Other parameters—attenuation value, power rating, and connector interface—remain matched. If the system’s maximum operating frequency does not exceed 18 GHz, this part can serve as a viable substitute. However, for applications requiring full‑band coverage up to 32 GHz, it is not a suitable replacement, and the actual frequency requirements should be verified as a priority.

Analysis ID: 9E80-0704000

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