FMAT7466-7 Replacement: M3933/30-15S, SA6-07

Original Part

FMAT7466-7

Fairview Microwave

RF Attenuators 7dB 0 Hz ~ 12 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

M3933/30-15S

Amphenol SV Microwave

RF Attenuators 7dB 0 Hz ~ 32 GHz 50 Ohms 2W SMA In-Line Module

SA6-07

Fairview Microwave

RF Attenuators 7dB 0 Hz ~ 6 GHz 50 Ohms 2W SMA In-Line Module

1. M3933/30-15S Substitution Conclusion The M3933/30-15S can serve as a complete, drop-in replacement for the original FMAT7466-7 and represents a direct technical upgrade. Both attenuators share identical core specifications, including attenuation value (7dB), power handling (2W), and impedance (50Ω). The primary technical difference lies in the frequency range: the M3933/30-15S operates from DC to 32 GHz, significantly wider than the original's DC to 12 GHz range. The substitute guarantees its nominal attenuation performance and impedance matching up to 32 GHz in the millimeter-wave band, whereas the original part may exhibit performance degradation above 12 GHz. This gives the M3933/30-15S a definitive performance advantage in higher-frequency applications while maintaining full backward compatibility across all frequencies of the original design. The trade-off is typically a higher cost. For applications not exceeding 12 GHz, the performance of both units will be essentially equivalent.

2. SA6-07 Substitution Conclusion The SA6-07 can substitute for the original FMAT7466-7 but carries strict frequency limitations that require careful evaluation. The basic parameters—attenuation, power rating, and impedance—are perfectly matched between the two. The critical technical distinction is the frequency range: the SA6-07 is specified only from DC to 6 GHz, which is half the bandwidth of the original part (DC to 12 GHz). The SA6-07 is only guaranteed to perform within its specified 6 GHz limit. In the band from 6 GHz to 12 GHz, its performance in terms of attenuation accuracy, VSWR, and other parameters will degrade significantly or may become non-functional. This limitation confines the SA6-07's use to systems whose operating frequency is definitively known not to exceed 6 GHz. If the original design or any future upgrade might involve frequencies above 6 GHz, this substitution is not viable, as it would lead to system performance degradation.

Analysis ID: 1F74-D8F4000

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