FMAT7466-8 Replacement: SA6-08, SA18H-08

Original Part

FMAT7466-8

Fairview Microwave

RF Attenuators 8dB 0 Hz ~ 12 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 Feasible, but conditional. The SA6-08 is identical to the original part in attenuation value, power rating, impedance, and connector type. However, its maximum operating frequency is only 6 GHz, significantly lower than the original's 12 GHz. If your application operates below 6 GHz, the SA6-08 serves as a direct and cost-effective substitute. However, if the system frequency exceeds 6 GHz, using the SA6-08 will introduce significant additional insertion loss and performance degradation. In this range, its actual attenuation will be considerably higher than the nominal 8dB, and impedance matching will deteriorate. Therefore, it is not a viable substitute for scenarios above 6 GHz.

2. SA18H-08 Substitution Conclusion Fully feasible and represents a performance upgrade. The SA18H-08 matches the original part in all key parameters (attenuation, power, impedance, interface). Furthermore, its operational frequency range (0-18 GHz) fully covers and exceeds the original part's 12 GHz upper limit. Across all intended operating frequencies of the original design, the SA18H-08 will provide equivalent performance while offering headroom for system expansion into higher frequencies (12-18 GHz). This substitution carries no risk of electrical performance degradation. The primary considerations are potential minor differences in cost and physical dimensions.

Analysis ID: BA54-0469000

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