1. AT-107V Substitution Conclusion Based on core electrical parameters (7dB attenuation, DC-18GHz frequency range, 50Ω impedance, 2W power handling) and mechanical interface (SMA inline module), the AT-107V is identical to the original part LCAT1006-07, making direct substitution feasible. The primary difference lies in the manufacturer (Hirose replacing L-com). While the fundamental performance matches, there may be minor distinctions in unspecified secondary parameters, such as frequency response flatness, typical/maximum voltage standing wave ratio (VSWR), temperature coefficient, and long-term reliability standards. These variations generally do not affect functionality in most general RF link applications. However, for operation near the upper frequency limit (e.g., approaching 18GHz) or in high-precision applications, it is recommended to verify the specific device’s datasheet to ensure no degradation in system performance.