45° PCB Mount SMA Connectors Johnson / Cinch Connectivity 45° PCB Mount SMA Connectors are designed for tight enclosures, including board-to-board applications. These connectors can be used where there are height restrictions for vertical mount and width restrictions for an end-launch connector. Typical applications for Johnson / Cinch Connectivity 45° PCB Mount SMA Connectors include board characterization and test and measurement systems.