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

Original Part

M3933/30-03S

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 This part is not a direct drop-in replacement for the original component. The key discrepancy lies in its operational frequency range (0-12 GHz), which is significantly narrower than the original's 0-32 GHz specification. If the application system operates above 12 GHz (e.g., within the Ku, K, or Ka bands), this attenuator will fail to provide the specified 1dB attenuation. Its performance metrics, including insertion loss and VSWR, will degrade sharply, leading to signal distortion or overall system performance degradation. Therefore, it is only suitable for low-frequency applications below 12 GHz.

2. LCAT1005-01 Substitution Conclusion Substitution with this part may be considered under strict limitations, but it carries defined risks. The primary difference is again the operational frequency range (0-18 GHz), which does not cover the original part's full 0-32 GHz bandwidth. Performance cannot be guaranteed within the 18 GHz to 32 GHz high-frequency range (encompassing portions of the K-band and the entire Ka-band), rendering it potentially unsuitable. This part can only be considered as a downgraded substitute if the system's maximum operating frequency is confirmed not to exceed 18 GHz. If the system frequency may operate above 18 GHz, substitution is not viable.

Analysis ID: 36A8-3F88000

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