The WC-090-D2-SF is a high-precision microwave Waveguide to Coaxial Adapter professionally engineered for strict adherence to the rectangular WR-90 architectural standard in a specialized 1/2 Height Profile layout. Operating continuously across the 8.2 GHz to 12.4 GHz X-Band spectrum, this premium compact "Type D2" transition component ensures stable electromechanical coupling and maximum energy transfer with a low maximum V.S.W.R profile of 1.3 : 1. Manufactured from high-grade aluminum alloy via advanced CNC machining in Taiwan, this ultra-lightweight 22.3 g adapter features a standardized square UG-39/U Style cover flange layout, mated to a high-durability coaxial SMA-Female connector port, safely managing continuous wave power loads up to 300 Watts (CW). This low-profile design minimizes physical volume and weight strain, rendering it the definitive choice for space-constrained RF path integration, weight-sensitive airborne radar arrays, mobile satellite communication enclosures, wireless testing chambers, and mission-critical laboratory calibration setups.