FMAT7463-10 Replacement: SA18S10W-10, SA6S10W-10

Original Part

FMAT7463-10

Fairview Microwave

RF Attenuators 10dB 0 Hz ~ 12.4 GHz 50 Ohms 10W SMA In-Line Module

Alternative Part

SA18S10W-10

Fairview Microwave

RF Attenuators 10dB 0 Hz ~ 18 GHz 50 Ohms 10W SMA In-Line Module

SA6S10W-10

Fairview Microwave

RF Attenuators 10dB 0 Hz ~ 6 GHz 50 Ohms 10W SMA In-Line Module

1. SA18S10W-10 Substitution Conclusion The SA18S10W-10 serves as a direct and performance-enhanced drop-in replacement for the original part. Both devices are identical in attenuation value (10 dB), impedance (50 Ω), rated power (10 W), and package form factor. The key difference lies in the frequency range: the original part supports 0-12.4 GHz, whereas the SA18S10W-10 extends the upper frequency limit to 18 GHz. By maintaining all critical electrical specifications, the SA18S10W-10 offers a wider operational bandwidth. It fully covers and surpasses the application scope of the original part, providing assured performance, particularly in scenarios involving higher frequencies (such as portions of the Ku-band). Substitution is both feasible and recommended.

2. SA6S10W-10 Substitution Conclusion The SA6S10W-10 presents critical performance limitations as a substitute and requires careful evaluation. While it matches the original part in attenuation, impedance, power rating, and package, its core deficiency is a frequency range limited to 0-6 GHz, significantly lower than the original's 12.4 GHz upper limit. If the host circuit or system operates between 6 GHz and 12.4 GHz, using this part will introduce additional, uncontrolled insertion loss. This can lead to severe signal attenuation, increased reflections (degraded VSWR), and overall performance degradation. This substitute is only viable for applications where the operating frequency is definitively below 6 GHz; otherwise, its use is not feasible.

Analysis ID: E428-4550000

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