FMAT7620-8 Replacement: SA6-08, SA18H-08

Original Part

FMAT7620-8

Fairview Microwave

RF Attenuators 8dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

SA6-08

Fairview Microwave

RF Attenuators 8dB 0 Hz ~ 6 GHz 50 Ohms 2W SMA In-Line Module

SA18H-08

Fairview Microwave

RF Attenuators 8dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

1. SA6-08 Substitution Conclusion The SA6-08 matches the original part FMAT7620-8 in attenuation value, power handling, impedance, and package. However, its frequency range is limited to 0 Hz to 6 GHz, whereas the original part supports 0 Hz to 18 GHz. If the application operates above 6 GHz—such as in millimeter-wave or high-frequency communication systems—the SA6-08 will not function effectively, potentially leading to insufficient signal attenuation or degraded performance. It is only suitable for low-frequency applications (≤6 GHz) and cannot be substituted at higher frequencies. Careful evaluation based on actual frequency requirements is necessary.

2. SA18H-08 Substitution Conclusion The SA18H-08 fully aligns with the original part FMAT7620-8 in attenuation value, power rating, impedance, package, and frequency range (0 Hz to 18 GHz). There are no material differences in electrical performance or mechanical compatibility, making it a direct drop-in replacement. This consistency ensures that in high-frequency applications—such as broadband testing, radar, or wireless systems—the SA18H-08 will deliver identical signal attenuation and reliability without requiring additional adjustments or introducing risk. Therefore, substitution feasibility is high.

Analysis ID: 8D4E-B6DF000

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