Original Part
Alternative Part
1. AT-109V Substitution Conclusion
From the perspective of core electrical performance parameters, the AT-109V can fully replace the original part LCAT1000-09. The key difference lies in its extended frequency range of 0–18 GHz (compared to 0–6 GHz for the Original Part). The AT-109V maintains the specified 9 dB attenuation accuracy and 50 Ω impedance matching up to 18 GHz, offering broader bandwidth applicability. In contrast, the Original Part may exhibit degraded performance above 6 GHz. Both devices share identical attenuation value, power rating (2 W), impedance, and interface (SMA male straight-through). Therefore, the AT-109V can be directly substituted in applications below 6 GHz, while providing superior high‑frequency adaptability.
2. M3933/25-35S Substitution Conclusion
The M3933/25-35S is also a feasible direct replacement for the LCAT1000-09 in terms of basic functional parameters. Its primary distinction is likewise the extended frequency coverage up to 0–18 GHz (exceeding the 6 GHz upper limit of the Original Part), indicating a higher‑frequency broadband design capable of maintaining stable attenuation characteristics into the microwave range. All other parameters—attenuation value, power handling, impedance, and interface configuration—remain identical. It is worth noting that, as an Amphenol SV Microwave product, the component likely adheres to MIL standards (the M3933 prefix suggests potential military‑grade association), which may imply stricter environmental robustness, reliability, and tolerance control. However, in the absence of specific military requirements, it can be regarded as a high‑performance alternative for general commercial and industrial applications.
Analysis ID: 85F7-7BFD000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com