FMAT1009 Replacement: SA18SS-03, FMAT7467-3

Original Part

FMAT1009

Fairview Microwave

RF Attenuators 3dB 0 Hz ~ 6 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

SA18SS-03

Fairview Microwave

RF Attenuators 3dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

FMAT7467-3

Fairview Microwave

RF Attenuators 3dB 0 Hz ~ 12 GHz 50 Ohms 2W SMA In-Line Module

1. SA18SS-03 Substitution Conclusion The SA18SS-03 can fully replace the FMAT1009, though an interface compatibility risk exists. Its primary technical advantage is its extended frequency range of 0–18 GHz, which far exceeds the original part's 6 GHz limit. It maintains stable attenuation performance even at higher frequencies, such as in the Ku-band. The datasheet specifies its connector type as "SSMA." While this interface is mechanically compatible with standard SMA and generally interoperable, its slightly smaller dimensions may introduce connection reliability issues in scenarios involving frequent mating/unmating cycles or high-precision applications due to mechanical tolerances. This is a critical difference requiring verification during substitution.

2. FMAT7467-3 Substitution Conclusion The FMAT7467-3 is a direct and superior replacement. Its key electrical parameters—attenuation value, power handling, and impedance—are identical to those of the original part. Furthermore, it extends the frequency range to 0–12 GHz. Its performance is equivalent to the FMAT1009 up to 6 GHz, while providing additional performance margin in the 6–12 GHz band (covering frequencies such as the X-band), resulting in broader applicability. It features a standard SMA interface (JACK-PLUG), which is mechanically and electrically compatible with the original part's SMA connector. No connection adaptation concerns exist, enabling a seamless substitution.

Analysis ID: DBD0-AE5D000

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