FMAT7467-8 Replacement: AT-108V, M3933/25-34S

Original Part

FMAT7467-8

Fairview Microwave

RF Attenuators 8dB 0 Hz ~ 12 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

AT-108V

Hirose Electric Co Ltd

RF Attenuators 8dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

M3933/25-34S

Amphenol SV Microwave

RF Attenuators 8dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

1. AT-108V Substitution Conclusion The AT-108V demonstrates high feasibility as a replacement for the original FMAT7467-8. The primary difference lies in the frequency range, which has been extended from 0 Hz–12 GHz to 0 Hz–18 GHz, while all other key parameters—attenuation (8 dB), power rating (2 W), impedance (50 Ω), and package (SMA in-line module)—remain identical. The AT-108V provides improved performance coverage at higher frequencies (i.e., 12 GHz to 18 GHz) while maintaining full backward compatibility across the original part’s operating band. In applications where system frequency requirements do not exceed 12 GHz, the AT-108V can be directly substituted without performance degradation. For operation above 12 GHz, it offers additional bandwidth headroom. However, attention should be paid to potential minor variations in mechanical dimensions or connector compatibility due to the change in manufacturer. It is recommended to verify physical interface fit before implementation.

2. M3933/25-34S Substitution Conclusion The M3933/25-34S also presents high feasibility as a replacement for the original FMAT7467-8. Similar to the AT-108V, the key variation is the expanded frequency range from 0 Hz–12 GHz to 0 Hz–18 GHz, with all other specifications—attenuation, power handling, impedance, and package—matching the original part. The M3933/25-34S supports wider bandwidth applications in RF systems and is particularly suitable for future designs that may extend operation up to 18 GHz. Within the 0–12 GHz range, its electrical performance is equivalent to the original. However, the change in manufacturer to Amphenol SV Microwave may introduce differences in quality control or environmental robustness (e.g., operating temperature range, vibration tolerance). It is therefore advisable to evaluate the specific application environment to ensure long-term reliability. Overall, this part meets and, in frequency coverage, exceeds the original electrical requirements.

Analysis ID: A55C-006E000

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