FMAT7620-9 Replacement: FMAT7467-9, SA6H-09

Original Part

FMAT7620-9

Fairview Microwave

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

Alternative Part

FMAT7467-9

Fairview Microwave

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

SA6H-09

Fairview Microwave

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

1. FMAT7467-9 Substitution Conclusion From the perspective of attenuation value, power handling, impedance, and connector interface, the FMAT7467-9 is identical to the original part FMAT7620-9 and can serve as a direct substitute. The core difference lies in its upper operating frequency limit of 12 GHz, which is lower than the original part's 18 GHz. If your application operates at 12 GHz or below, substitution is feasible and cost-effective. However, if your circuit or test system functions within the 12 GHz to 18 GHz band, using this part will introduce unpredictable additional insertion loss and mismatch. This will lead to inaccurate signal attenuation, measurement errors, and potentially degraded system performance. Therefore, it is not a suitable substitute for high-frequency applications in this range.

2. SA6H-09 Substitution Conclusion The SA6H-09 matches the FMAT7620-9 in fundamental parameters such as attenuation, power rating, and impedance. However, its effective operating frequency range is only 0–6 GHz, significantly narrower than the original part's 18 GHz. It can only guarantee nominal attenuation accuracy and good impedance matching within the 6 GHz band. For any application operating above 6 GHz, this device will fail to provide stable and reliable attenuation performance, significantly degrading signal integrity. Consequently, it cannot be considered a viable substitute for the original part unless the application frequency is confirmed to be entirely confined below 6 GHz.

Analysis ID: D973-1AAB000

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