FMAT7624-2 Replacement: SA3N5W-02, SA18N5WA-02

Original Part

FMAT7624-2

Fairview Microwave

RF Attenuators 2dB 0 Hz ~ 18 GHz 50 Ohms 5W N-Type In-Line Module

Alternative Part

SA3N5W-02

Fairview Microwave

RF Attenuators 2dB 0 Hz ~ 3 GHz 50 Ohms 5W N-Type In-Line Module

SA18N5WA-02

Fairview Microwave

RF Attenuators 2dB 0 Hz ~ 18 GHz 50 Ohms 5W N-Type In-Line Module

1. SA3N5W-02 Substitution Conclusion The SA3N5W-02 cannot serve as a full drop-in replacement for the FMAT7624-2. While their core parameters—such as attenuation value (2dB), power handling capacity (5W), impedance (50Ω), and connector interface (Type-N)—are identical, a critical discrepancy exists in the frequency range. The SA3N5W-02 is only specified for operation from 0 to 3 GHz, whereas the original part is rated for frequencies up to 18 GHz. Within the 3 GHz to 18 GHz band, the performance of the SA3N5W-02—including its attenuation accuracy and VSWR—cannot be guaranteed. Furthermore, its use in this range risks circuit damage due to potential mismatch. Therefore, this substitute is suitable only for specific applications where the operational frequency is definitively below 3 GHz.

2. SA18N5WA-02 Substitution Conclusion The SA18N5WA-02 is a fully qualified substitute for the FMAT7624-2. All key electrical parameters are identical: attenuation (2dB), frequency range (0-18 GHz), power handling (5W), and impedance (50Ω). The mechanical form factor is also the same, utilizing an in-line Type-N module configuration. The difference in part numbers (FMAT7624-2 vs. SA18N5WA-02) most likely reflects an update to the manufacturer's internal product coding system and does not indicate any performance variation. Consequently, these two components are directly interchangeable in terms of both electrical performance and mechanical compatibility.

Analysis ID: 1AF3-4DD7000

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