Original Part
Alternative Part
1. AT-101V Substitution Conclusion
From the perspective of key electrical parameters and mechanical interface, the AT-101V can directly replace the original LCAT1000-01 part. The attenuation value (1 dB), rated power (2 W), characteristic impedance (50 Ω), and connector type (in-line SMA male) are identical, ensuring full functional and performance compatibility under the original design conditions (≤6 GHz). The difference lies in the frequency range: the AT-101V (0–18 GHz) is significantly wider than the original part (0–6 GHz). The AT-101V maintains its attenuation accuracy and impedance matching performance up to 18 GHz, which represents a performance margin improvement for the original application. It not only fully covers the original requirements but may also support potential future system frequency upgrades without introducing compatibility issues.
2. M3933/30-03N Substitution Conclusion
The M3933/30-03N is also a viable direct replacement for the LCAT1000-01 based on fundamental parameters, as its attenuation, power rating, impedance, and connector format match the original part exactly. The most critical technical distinction is its extended frequency range of 0–32 GHz, far exceeding the original 6 GHz requirement. This attenuator employs a design and materials suitable for millimeter-wave frequencies, offering excellent frequency flatness and low VSWR across a broad bandwidth. For applications below 6 GHz, it provides superior and stable performance. Furthermore, as a product from Amphenol SV Microwave, it likely conforms to more stringent military or high-reliability standards, potentially offering advantages in environmental robustness and long-term stability, though typically at a higher cost.
Analysis ID: DDD0-FB32000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com