The TE Connectivity AMPLIMITE HD-20 745782-4 is a 15-position D-sub receptacle, shell size DA, with female sockets arranged in two rows. This is the standard-density layout for a DB-15 shell — the same footprint used across the HD-20 series for signal I/O on industrial controllers, test equipment, and serial data interfaces.
Through-hole right-angle mounting with solder termination. The flange feature uses 4-40 threaded inserts (housing/shell) for panel-mount or bracket retention — standard for D-sub connectors where the cable strain is taken by the shell, not the solder joints. The backset spacing of 0.318" (8.08mm) sets the distance from the PCB to the mounting face; verify that your enclosure standoffs or panel thickness clear this dimension before layout.