32AS102-K20S3 Replacement: FMAT7466-20, SA26B-20

Original Part

32AS102-K20S3

Rosenberger

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 feasible, or only permissible under limited conditions. The FMAT7466-20 matches the original part in attenuation value, power rating, and interface. However, its operating frequency range (0–12 GHz) is significantly narrower than the original part’s 0–18 GHz. If the signal frequency in the original application exceeds 12 GHz, using this part will introduce insertion loss substantially higher than the design specification (i.e., a sharp increase in attenuation), leading to severe signal degradation, imbalance in the system link budget, and potential functional failure. Substitution is acceptable only if the maximum operating frequency of the system is confirmed not to exceed 12 GHz; otherwise, it is not recommended.

2. SA26B-20 Substitution Conclusion Fully substitutable with enhanced performance margin. The SA26B-20 aligns perfectly with the original part in all key parameters: 20 dB attenuation, 2 W power handling, 50 Ω impedance, and SMA interface. Moreover, its operating frequency range (0–26 GHz) completely covers and exceeds the original part’s 0–18 GHz. The SA26B-20 maintains specified attenuation accuracy and power capability across all frequency bands required by the original system, while offering performance headroom in the 18–26 GHz range, where its high-frequency performance may even be superior. This part represents a direct, drop-in replacement with wider bandwidth.

Analysis ID: 6F17-CE12000

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