FMAT7466-10 Replacement: AT-110V, M3933/30-21N

Original Part

FMAT7466-10

Fairview Microwave

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

Alternative Part

AT-110V

Hirose Electric Co Ltd

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

M3933/30-21N

Amphenol SV Microwave

RF Attenuators 10dB 0 Hz ~ 32 GHz 50 Ohms 2W SMA In-Line Module

1. AT-110V Substitution Conclusion The AT-110V is a fully qualified drop-in replacement for the original FMAT7466-10. Its core electrical parameters—10 dB attenuation, 2W power handling, and 50Ω impedance—along with its physical interface (SMA coaxial configuration) are identical to the original, ensuring direct functional compatibility. The key difference lies in the frequency range, which has been extended from the original 0–12 GHz to 0–18 GHz. The AT-110V provides verified attenuation performance across the higher frequency band (12–18 GHz), while its performance up to 12 GHz is expected to be comparable to or better than the original. Consequently, this substitution does not represent a downgrade but may instead offer additional frequency margin to the system. Under non-extreme operating conditions, the replacement is both feasible and reliable.

2. M3933/30-21N Substitution Conclusion The M3933/30-21N is a direct functional and mechanical replacement for the original FMAT7466-10. Key specifications such as attenuation, power rating, and impedance are identical, and it utilizes the standard SMA interface. The primary distinction is again the frequency coverage, which extends from 0 to 32 GHz, significantly wider than the original's 12 GHz limit. This component is designed for millimeter-wave applications and typically employs higher-grade materials, internal construction, and manufacturing processes. As a result, it delivers superior performance—such as lower VSWR and higher accuracy/stability—even within the sub-12 GHz range. From a performance standpoint, this substitution is feasible and effectively constitutes an "over-spec" or downgraded usage of a higher-capability part. It should be noted, however, that such wideband components may carry higher costs. Furthermore, the part number likely indicates a military (MIL) specification, which could affect procurement channels and pricing compared to commercial off-the-shelf equivalents.

Analysis ID: 5195-0395000

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