FMAT7467-9 Replacement: AT-109V, M3933/25-35S

Original Part

FMAT7467-9

Fairview Microwave

RF Attenuators 9dB 0 Hz ~ 12 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

AT-109V

Hirose Electric Co Ltd

RF Attenuators 9dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

M3933/25-35S

Amphenol SV Microwave

RF Attenuators 9dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

1. AT-109V Substitution Conclusion From the perspective of core electrical parameters and mechanical interfaces, the AT-109V can serve as a substitute for the original FMAT7467-9. Both components are identical in attenuation (9dB), impedance (50Ω), power rating (2W), and interface configuration (SMA In-Line Module). The key difference lies in the frequency range: the AT-109V covers 0-18 GHz, which is wider than the original part's 0-12 GHz. Within the original operational band below 12 GHz, the AT-109V's performance fully meets and may even provide additional margin, making it a theoretically equivalent or superior replacement. However, for any actual substitution, it remains essential to verify critical performance parameters—such as insertion loss, VSWR, and power handling—within the specific application frequency band. Particular attention should be paid to potential subtle variations in phase characteristics and temperature stability at higher frequencies, which can differ between manufacturers.

2. M3933/25-35S Substitution Conclusion The M3933/25-35S is a feasible substitute for the original FMAT7467-9 based on fundamental parameters. Its key specifications—attenuation, impedance, power rating, and interface—are identical to those of the original part. Similarly, its frequency range (0-18 GHz) exceeds that of the original (0-12 GHz), indicating that it meets all nominal performance requirements within the original 12 GHz design specification while offering extended high-frequency capability. It should be noted that differences in manufacturer inevitably lead to variations in internal construction, materials, and processing. These can result in discrepancies in specific high-frequency performance metrics—such as group delay and third-order intercept—as well as in environmental robustness under conditions like vibration and temperature cycling. For high-performance or harsh-environment applications, comprehensive compatibility and reliability testing is mandatory prior to substitution.

Analysis ID: BAB4-8487000

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