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

Original Part

53AS105-K30N3

Rosenberger

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

Alternative Part

SA18N5WA-30

Fairview Microwave

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

FMAT7461-30

Fairview Microwave

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

1. SA18N5WA-30 Substitution Conclusion From the perspective of core electrical parameters, the SA18N5WA-30 is identical to the original part in attenuation (30dB), power handling (5W), impedance (50Ω), and connector type (N-type), establishing a solid foundation for direct substitution. The key distinction is its extended frequency range, which reaches 18 GHz, significantly exceeding the original part's 10 GHz upper limit. This variant can not only operate seamlessly at all frequencies (0-10 GHz) of the original system but also provides headroom for potential future system frequency upgrades or applications in higher bands (e.g., Ku-band). It represents a superior, performance-encompassing alternative.

2. FMAT7461-30 Substitution Conclusion The FMAT7461-30 matches the original part exactly in critical specifications—attenuation, power rating, impedance, and interface—ensuring functional equivalence within the original design's frequency band. The difference lies in its frequency range, with an upper limit of 12.4 GHz, slightly higher than the original's 10 GHz. It fully covers and marginally exceeds the original part's operational bandwidth. Performance within the 0-10 GHz range can be considered equivalent. Therefore, it is electrically viable as a direct drop-in replacement while offering a degree of frequency margin.

Analysis ID: 2FA8-F717000

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