AT-101V Replacement: SA26B-01, FMAT7466-1

Original Part

AT-101V

Hirose Electric Co Ltd

RF Attenuators 1dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

SA26B-01

Fairview Microwave

RF Attenuators 1dB 0 Hz ~ 26 GHz 50 Ohms 2W SMA In-Line Module

FMAT7466-1

Fairview Microwave

RF Attenuators 1dB 0 Hz ~ 12 GHz 50 Ohms 2W SMA In-Line Module

1. SA26B-01 Substitution Conclusion The SA26B-01 matches the original AT-101V in all key specifications—attenuation (1 dB), impedance (50 Ω), power rating (2 W), and package (SMA In-Line Module). The primary difference is its extended frequency range of 0–26 GHz, compared to 0–18 GHz for the AT-101V. The SA26B-01 not only fully covers the original part’s operating band but also provides additional high‑frequency margin, making it suitable for higher‑frequency applications such as millimeter‑wave testing or communication systems without performance degradation. Substitution is highly feasible and may even improve the system’s frequency compatibility.

2. FMAT7466-1 Substitution Conclusion The FMAT7466-1 aligns with the original AT-101V in basic parameters—attenuation, impedance, power rating, and package. However, its frequency range is limited to 0–12 GHz, whereas the AT-101V operates up to 18 GHz. Above 12 GHz, the FMAT7466-1 may not maintain specified attenuation accuracy and could introduce additional loss. If the original application involves the 12–18 GHz band (e.g., high‑frequency radar or satellite communications), substitution is not viable. Replacement is only feasible if the system’s operating frequency is strictly confined to below 12 GHz; otherwise, performance will fall short of requirements.

Analysis ID: 3038-F2B7000

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