XM3K-N D-Sub Connector Plugs Omron Electronics XM3K-N D-Sub Connector Sockets are designed to mount on the back surface of the circuit boards. These SMT plugs are available in 9 and 25 contact variants and compatible with reflow mounting. The XM3K-N D-sub connectors feature circuit board positioning bosses that facilitate accurate mounting on circuit boards. These SMT plugs are RoHS compliant and operate at -55°C to +105°C temperature range. Omron Electronics XM3K-N D-sub plugs offer a steel shell with nickel plating and are available in an optional anchor variant.