FMAT7620-20 Replacement: FMAT7466-20, SA26B-20

Original Part

FMAT7620-20

Fairview Microwave

RF Attenuators 20dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

FMAT7466-20

Fairview Microwave

RF Attenuators 20dB 0 Hz ~ 12 GHz 50 Ohms 2W SMA In-Line Module

SA26B-20

Fairview Microwave

RF Attenuators 20dB 0 Hz ~ 26 GHz 50 Ohms 2W SMA In-Line Module

1. FMAT7466-20 Substitution Conclusion Direct substitution is not recommended. The frequency range of the FMAT7466-20 is limited to 0–12 GHz, which is narrower than the original part’s 0–18 GHz. Within the 12–18 GHz band, its attenuation accuracy and impedance matching may degrade, potentially leading to increased signal reflection or attenuation error. Therefore, this substitute is suitable only for systems operating at or below 12 GHz. It should not be used if the original application involves higher frequencies.

2. SA26B-20 Substitution Conclusion This part is a fully compatible replacement with enhanced performance. The SA26B-20 extends the frequency range to 0–26 GHz, fully covering the original 0–18 GHz specification. It offers greater bandwidth margin across the entire frequency range, ensuring improved stability in high-frequency operation. All other key parameters—including attenuation (20 dB), power rating (2 W), impedance (50 Ω), and connector type—remain identical to the original part. Thus, it can be directly substituted and may provide better performance in high-frequency applications.

Analysis ID: F546-62E9000

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