LCAT1002-06 Replacement: SA18SS-06, FMAT7467-6

Original Part

LCAT1002-06

L-com

RF Attenuators 6dB 0 Hz ~ 3 GHz 50 Ohms 2W SMA In-Line Module

Alternative Part

SA18SS-06

Fairview Microwave

RF Attenuators 6dB 0 Hz ~ 18 GHz 50 Ohms 2W SMA In-Line Module

FMAT7467-6

Fairview Microwave

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

1. SA18SS-06 Substitution Conclusion Substitution is conditionally feasible but requires careful evaluation of interface compatibility and necessity. The key advantage of the SA18SS-06 is its significantly extended frequency range up to 18 GHz, far exceeding the original part's 3 GHz. It delivers superior performance in high-frequency applications such as Ku-band satellite communications and 5G millimeter-wave front-end testing, and typically offers better in-band flatness and accuracy within the common 0–3 GHz range. Its interface uses SSMA (also known as OS-SMA or mini-SMA), which is mechanically compatible with standard SMA connectors and can mate physically. However, due to its smaller size, repeated mating cycles or operation in high-vibration environments may accelerate wear on standard SMA female connectors or lead to variations in connection reliability. Therefore, if the system demands extremely high connector longevity and stability, or if the actual operating frequency remains below 3 GHz, selecting this part may introduce unnecessary cost increases and interface risks.

2. FMAT7467-6 Substitution Conclusion Substitution is highly feasible and represents a more balanced upgrade option. The FMAT7467-6 maintains the same SMA interface, power rating, and impedance as the original part while extending the frequency range to 12 GHz. It fully covers the original 3 GHz applications with ample margin, accommodating potential future mid-to-high frequency needs such as C-band and X-band RF systems. Its electrical performance—including VSWR and attenuation accuracy—is typically superior across the extended frequency range. This part presents no interface adaptation issues and can be directly substituted. However, it should be noted that if the actual application is strictly limited to below 3 GHz, its high-frequency performance advantages may not be realized, and its cost may be slightly higher than components rated only for 3 GHz. Therefore, for applications strictly confined to low frequencies with high cost sensitivity, the necessity of substitution should be carefully weighed.

Analysis ID: 68AE-5EF5000

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