FMAT7461-30 Replacement: 53AS105-K30N3, SA18N5WA-30

Original Part

FMAT7461-30

Fairview Microwave

RF Attenuators 30dB 0 Hz ~ 12.4 GHz 50 Ohms 5W N-Type In-Line Module

Alternative Part

53AS105-K30N3

Rosenberger

RF Attenuators 30dB 0 Hz ~ 10 GHz 50 Ohms 5W N-Type In-Line Module

SA18N5WA-30

Fairview Microwave

RF Attenuators 30dB 0 Hz ~ 18 GHz 50 Ohms 5W N-Type In-Line Module

1. 53AS105-K30N3 Substitution Conclusion Direct substitution is not recommended. The key discrepancy lies in its upper operating frequency limit of 10 GHz, which is lower than the original part's 12.4 GHz. Within the 10 GHz to 12.4 GHz frequency range, critical RF performance parameters of this part—such as attenuation accuracy and VSWR—may fail to meet the original design specifications. This introduces a risk of degraded system performance across that specific band.

2. SA18N5WA-30 Substitution Conclusion Substitution is recommended and represents a performance upgrade. The primary difference is its extended upper operating frequency limit of 18 GHz, significantly higher than the original part's 12.4 GHz. This part fully covers all operational frequency bands of the original part (0-12.4 GHz) while maintaining equivalent performance. It offers greater frequency margin, making it suitable for future applications that may involve higher frequencies, and is therefore the superior choice.

Analysis ID: F73F-1378000

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