The 142-0593-411 is an SMA straight solder type bulkhead jack connector designed for use with RG-405/U (0.086" semi-rigid) cable. This connector features gold plating and is optimized for RF/microwave applications with a VSWR specification of 1.20 + 0.025f (GHz) across the 0-18 GHz frequency range. The connector has a hex dimension of 0.312" (7.92 mm) and accommodates panel thicknesses from 0.045" to 0.125" (1.14 to 3.18 mm). The center contact dimension is 0.070" (1.78 mm), and the connector is assembled using 60/40 tin/lead solder with a 2-piece design. This bulkhead jack is commonly used in RF/microwave test equipment, instrumentation, and high-frequency communication systems where reliable semi-rigid cable connections are required.