1. LCAT1005-06 Substitution Conclusion The LCAT1005-06 is a fully compatible drop-in replacement for the original LCAT1002-06 part. All key specifications—including attenuation (6 dB), impedance (50 Ω), power rating (2W), and connector interface—are identical. The sole difference lies in the frequency range: the original part is rated for DC-3 GHz, whereas the LCAT1005-06 extends this to DC-18 GHz. Therefore, the LCAT1005-06 offers superior high-frequency broadband performance while fully encompassing all operational bands of the original part. This constitutes a performance-upward compatible substitution. For applications within 3 GHz, it can be directly replaced, typically with no performance degradation. It should be noted that its design is likely optimized for higher frequencies, which may result in a slightly higher cost.