FMAT7467-1 Replacement: M3933/30-03S, SA26B-01

Original Part

FMAT7467-1

Fairview Microwave

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

Alternative Part

M3933/30-03S

Amphenol SV Microwave

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

SA26B-01

Fairview Microwave

RF Attenuators 1dB 0 Hz ~ 26 GHz 50 Ohms 2W SMA In-Line Module

1. M3933/30-03S Substitution Conclusion From a core electrical parameter perspective, the M3933/30-03S is a fully viable substitute for the original FMAT7467-1. Its primary technical advantage lies in its extended frequency range of 0 Hz to 32 GHz, significantly surpassing the original part's 12 GHz limit. The device maintains 1dB attenuation accuracy and 50-ohm impedance matching even within the higher frequency band (12 GHz to 32 GHz), providing the system with greater frequency application headroom and future upgrade potential. All other critical parameters—including attenuation value, power handling capability, and interface type—remain identical. The only potential discrepancy is that its description does not explicitly specify "Grade" and "Qualification" details. The original Fairview Microwave components are typically commercial grade. If the original application has stringent military or high-reliability certification requirements, it is necessary to verify the specific certification level of this part with Amphenol SV Microwave. Otherwise, for general commercial and industrial applications, it serves as a direct, enhanced substitute with broader performance coverage.

2. SA26B-01 Substitution Conclusion The SA26B-01 is a high-performance, same-brand substitute for the original FMAT7467-1, offering complete substitution feasibility. Its primary technical improvement is similarly reflected in the frequency range, extended to 0 Hz to 26 GHz, which is superior to the original part's 12 GHz. This attenuator can operate stably in high-frequency applications, including the Ku-band and even parts of the Ka-band, providing a wider operational bandwidth. All other key parameters—such as attenuation value, power rating, impedance, and SMA interface—are identical to the original part. As both parts originate from the same manufacturer (Fairview Microwave), they typically offer better continuity in design, manufacturing process, and performance consistency. Furthermore, the part is explicitly described as "SMA SS" (stainless steel interface), which may ensure better connector durability. The SA26B-01 is a seamless substitute that significantly expands the applicable frequency range while retaining all fundamental performance characteristics.

Analysis ID: 29F7-61FC000

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