AT-120V Replacement: FMAT7466-20, SA26B-20

Original Part

AT-120V

Hirose Electric Co Ltd

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 This part cannot serve as a full replacement for the original AT-120V. The discrepancy lies in its frequency range, which is limited to 0 Hz – 12 GHz, falling short of the original part’s upper limit of 18 GHz. In applications involving the 12 GHz to 18 GHz band, the FMAT7466-20 will not function properly and may lead to degraded signal attenuation performance or system failure. Therefore, it is only suitable for use in scenarios where the operating frequency does not exceed 12 GHz.

2. SA26B-20 Substitution Conclusion This part presents a viable substitution option. Its frequency range extends from 0 Hz to 26 GHz, fully covering and exceeding the original AT-120V’s 18 GHz requirement. Moreover, its attenuation values, power handling capacity, impedance, and connector interface are all consistent with those of the AT-120V. The SA26B-20 not only maintains equivalent performance across all frequency bands of the original design but also offers additional margin at higher frequencies, making it suitable for applications requiring wider bandwidth or future system upgrades.

Analysis ID: 6829-B88B000

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