521-060-0040H SMB series connector provide frequency performance up to 4 GHz with an industry accepted MS 39012 easy mate/un-mate snap-on coupling method. The spring design of the SMB connector’s outer contact provides a self-cleaning feature, which enhances the SMB connector’s electrical performance in moderate vibration environments. SMB connectors are ideally suited for applications in broadband, LAN/Internet routing, and test and measurement equipment and are available in a wide selection of cable and PCB configurations.