SA6H-12 Replacement: SA18E-12, LCAT1000-12

Original Part

SA6H-12

Fairview Microwave

RF Attenuators 12dB 0 Hz ~ 6 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

SA18E-12

Fairview Microwave

RF Attenuators 12dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

LCAT1000-12

L-com

RF Attenuators 12dB 0 Hz ~ 6 GHz 50 Ohms 2W SMA In-Line Module

1. SA18E-12 Substitution Conclusion The SA18E-12 can serve as a complete, high-performance-in-frequency substitute for the original SA6H-12. The core distinction lies in their frequency ranges: the SA18E-12 supports 0-18 GHz, significantly exceeding the original part's 0-6 GHz limit. The SA18E-12 maintains its specified attenuation accuracy and impedance matching up to 18 GHz, whereas the SA6H-12 may exhibit performance degradation beyond 6 GHz. Within the original design frequency (≤6 GHz), using the SA18E-12 poses no performance risk and instead provides additional frequency margin. However, this typically comes at a higher cost due to its superior frequency specifications.

2. LCAT1000-12 Substitution Conclusion The LCAT1000-12 is a qualified substitute for the SA6H-12 in terms of key electrical parameters. Both units share identical listed specifications for attenuation value, frequency range, power handling, and impedance. For applications within 0-6 GHz and 2W power levels, their attenuation function, power handling, and impedance matching performance are directly interchangeable. The primary difference is the manufacturer change from Fairview Microwave to L-com. This shift may introduce subtle variations not captured in the parameter table, such as specific connector plating, mechanical durability, or phase stability. Nevertheless, for most general RF applications focused on basic attenuation functionality, the LCAT1000-12 represents a viable drop-in replacement.

Analysis ID: D7C5-9E8D000

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