SA6S10W-01 Replacement: SA18S10W-01, FMAT7626-1

Original Part

SA6S10W-01

Fairview Microwave

RF Attenuators 1dB 0 Hz ~ 6 GHz 50 Ohms 10W SMA In-Line Module

Alternative Part

SA18S10W-01

Fairview Microwave

RF Attenuators 1dB 0 Hz ~ 18 GHz 50 Ohms 10W SMA In-Line Module

FMAT7626-1

Fairview Microwave

RF Attenuators 1dB 0 Hz ~ 18 GHz 50 Ohms 10W SMA In-Line Module

1. SA18S10W-01 Substitution Conclusion The SA18S10W-01 is a fully qualified substitute for the SA6S10W-01. Both parts are identical in all core parameters: attenuation value (1dB), impedance (50Ω), power rating (10W), and package form factor. The key difference lies in the frequency range, where the SA18S10W-01 (0-18 GHz) significantly exceeds the original part's 6 GHz specification. Within the original design's required 0-6 GHz band, the performance of the SA18S10W-01—including attenuation accuracy and VSWR—is guaranteed to be equal to or superior. This is because attenuators rated for higher frequencies typically exhibit greater stability and reliability at lower frequencies. Furthermore, this substitution represents a vertical upgrade within the same manufacturer's product line, ensuring seamless mechanical and electrical compatibility.

2. FMAT7626-1 Substitution Conclusion The FMAT7626-1 is functionally equivalent to the SA6S10W-01 in basic electrical parameters; however, full mechanical interface compatibility requires verification. All key specifications—attenuation value, frequency range (0-18 GHz), power rating, and impedance—are perfectly matched. Its wider operational bandwidth similarly provides ample performance margin for applications below 6 GHz. The datasheet specifies its interface as "SMA Male," whereas the original part is described as "Plug-Jack" (typically indicating a connector with one male and one female end). This suggests a potential discrepancy in connector gender or physical configuration. During system integration, it is essential to confirm whether the FMAT7626-1's physical connector combination (male/female) directly matches the original part and the system ports. Otherwise, an additional adapter may be necessary, which could introduce an unnecessary connection point and potential performance risks.

Analysis ID: 67CD-4565000

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