SA6-09 Replacement: SA18E-09, FMAT7467-9

Original Part

SA6-09

Fairview Microwave

RF Attenuators 9dB 0 Hz ~ 6 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

SA18E-09

Fairview Microwave

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

FMAT7467-9

Fairview Microwave

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

1. SA18E-09 Substitution Conclusion From an electrical performance and mechanical interface perspective, the SA18E-09 is a fully viable substitute for the original SA6-09 part. Both components are identical in attenuation value, power handling capacity, impedance, and package footprint. The key difference lies in the operational frequency range: the SA18E-09 is specified from 0–18 GHz, significantly wider than the SA6-09's 0–6 GHz range. The SA18E-09 meets all performance specifications within the original design's operating bands and offers potential for higher-frequency applications, though such broadband devices typically carry a slightly higher cost. Provided the system frequency remains within 6 GHz, this substitution is technically seamless and enhances design margin.

2. FMAT7467-9 Substitution Conclusion Substituting the SA6-09 with the FMAT7467-9 is feasible based on fundamental electrical parameters, but two critical differences require evaluation. First, its frequency range (0–12 GHz) covers and exceeds the original part's 6 GHz upper limit, ensuring proper operation within the original band. However, its interface is described as "JACK-PLUG," which is the reverse gender sequence of the SA6-09's "PLUG-JACK." This effectively inverts the male/female orientation of the mechanical connection. Direct replacement could result in incorrect cable orientation or a direct mating failure. The system connection topology must be reviewed; an adapter or cable reconfiguration may be necessary, as a plug-and-play swap is not guaranteed.

Analysis ID: AA21-37C1000

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