53AS105-K03N3 Replacement: SA6N5WA-03, FMAT7624-3

Original Part

53AS105-K03N3

Rosenberger

RF Attenuators 3dB 0 Hz ~ 10 GHz 50 Ohms 5W N-Type In-Line Module

Alternative Part

SA6N5WA-03

Fairview Microwave

RF Attenuators 3dB 0 Hz ~ 6 GHz 50 Ohms 5W N-Type In-Line Module

FMAT7624-3

Fairview Microwave

RF Attenuators 3dB 0 Hz ~ 18 GHz 50 Ohms 5W N-Type In-Line Module

1. SA6N5WA-03 Substitution Conclusion This part is not recommended as a direct substitute. The key discrepancy lies in its upper frequency limit of only 6 GHz, whereas the original part supports 10 GHz. If the original circuit operates between 6 GHz and 10 GHz, using the SA6N5WA-03 will lead to unintended excessive signal attenuation or transmission failure, resulting in degraded performance or system malfunction. Consideration is only viable if the application frequency is strictly confirmed to be below 6 GHz; otherwise, significant compatibility risks exist.

2. FMAT7624-3 Substitution Conclusion This part is suitable as a direct replacement. Its primary advantage is an extended upper frequency range of 18 GHz, fully covering and exceeding the original part's 10 GHz specification. Across the entire operating band of the original system (0-10 GHz), the attenuation performance of the FMAT7624-3 is reliably guaranteed, and it provides the system with greater frequency margin and bandwidth headroom. Given that parameters such as attenuation value, power handling, impedance, and connector interface are identical, this part offers a perfectly backward-compatible substitution.

Analysis ID: E02F-0643000

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