Original Part
Alternative Part
1. AT-109V Substitution Conclusion
The AT-109V is a fully qualified substitute for the original LCAT1002-09. Both components share identical core parameters—9dB attenuation, 50Ω impedance, 2W power rating, and SMA straight-through package—ensuring complete electrical and mechanical compatibility within the original design's DC-3GHz operating range.
The key difference lies in the AT-109V's extended frequency range, specified from DC to 18GHz. This indicates the use of enhanced circuit design and materials optimized for higher frequency performance. For systems originally operating below 3GHz, this difference does not introduce compatibility issues. Instead, it provides greater performance margin and potential headroom for future upgrades into higher frequency bands.
2. M3933/25-35S Substitution Conclusion
The M3933/25-35S is a fully qualified substitute for the original LCAT1002-09. It matches all critical performance parameters (9dB, 50Ω, 2W, SMA), establishing a basis for direct drop-in replacement.
Similar to the AT-109V, its primary deviation is the extended operational bandwidth of DC-18GHz. This suggests an internal resistor network and structural design optimized for high-frequency applications, typically resulting in flatter frequency response and lower VSWR.
Furthermore, this part number from Amphenol SV Microwave, as indicated by its MIL-style designation, implies conformance to military or high-reliability standards. It likely offers a wider operating temperature range, tighter performance tolerances, and superior environmental durability. This makes it suitable for applications demanding higher long-term stability and environmental robustness, extending its advantage beyond mere frequency extension.
Analysis ID: 576D-EDEB000
Based on part parameters and for reference only. Not to be used for procurement or production.
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