Original Part
Alternative Part
1. LCAT1005-20 Substitution Conclusion
The LCAT1005-20 is a fully compatible and performance-upgraded substitute for the SA3R-20. Both parts share identical core specifications—20dB attenuation, 50Ω impedance, 2W power handling, and SMA connectors—ensuring direct functional compatibility. The key difference lies in the frequency range: the original part supports 0-3 GHz, whereas the LCAT1005-20 extends coverage up to 18 GHz. The LCAT1005-20 maintains precise attenuation characteristics and excellent impedance matching well into this higher frequency region, far exceeding the original's operational bandwidth. This superior broadband performance allows it to operate seamlessly in the existing application while providing significant frequency headroom. It is, therefore, suitable for potential future high-frequency application expansion.
2. LCAT1000-20 Substitution Conclusion
The LCAT1000-20 serves as a fully compatible and performance-equivalent substitute for the SA3R-20. All critical specifications, including attenuation value, impedance, power rating, and interface, are identical. The primary variance is again in the frequency range: the LCAT1000-20 supports 0-6 GHz, outperforming the original part's 0-3 GHz limit. Within the original design's required 3 GHz band, the substitute guarantees equivalent performance. Furthermore, it provides additional performance margin in the 3-6 GHz range. Its bandwidth capability not only meets but exceeds the original requirements. Consequently, the substitution introduces no performance degradation and offers greater flexibility across a wider applicable frequency spectrum.
Analysis ID: 66CE-5A1C000
Based on part parameters and for reference only. Not to be used for procurement or production.
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