Heilind Electronics Expands Cinch Connectivity Solutions Offering with Johnson SMA/SMPM Adapters Share Article Johnson SMA/SMPM adapters are ideal for test and measurement and communication networking instrument applications SMA to SMPM adapters designed to deliver high frequency performance up to 26.5GHz (extended beyond typical SMA 18 GHz range and where competitor products operate) WILMINGTON, Mass. (PRWEB) April 28, 2021 Heilind Electronics, a premier distributor of electronic components worldwide and an authorized distributor for Cinch Connectivity Solutions, has introduced the Johnson SMPM connector family to its portfolio of RF interconnects. This solution features a new set of SMA to SMPM between-series adapters targeted at 5G and other high-frequency test applications.