Original Part
Alternative Part
1. LCAT1002-03 Substitution Conclusion
Not a direct substitute. While its attenuation value, power rating, and interface match the original part, the core discrepancy lies in its frequency range of only 0–3 GHz, compared to the original’s 0–18 GHz. In the high‑frequency band from 3 GHz to 18 GHz, the attenuation performance of the LCAT1002-03—including attenuation accuracy and VSWR—will degrade severely or become ineffective. If used in the original high‑frequency application, it would lead to degraded signal integrity, increased measurement error, or even functional failure. Therefore, it is suitable only for low‑frequency applications below 3 GHz.
2. FMAT7620-3 Substitution Conclusion
Electrically, it is a viable substitute. Its key specifications—3 dB attenuation, 0–18 GHz frequency range, 2 W power handling, 50 Ω impedance, and SMA interface—are fully aligned with the original part AT‑103V. Across the entire operating band, it provides comparable attenuation performance, power capability, and impedance matching. The differences lie in the manufacturer and unspecified grade and qualification status. This implies potential variations in long‑term reliability, lot‑to‑lot consistency, and suitability for specific industries (e.g., military, aerospace) compared to the original Hirose part. For general commercial or industrial applications, however, the FMAT7620-3 represents a feasible alternative.
Analysis ID: 7D1D-A719000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com