Rosenberger SMP RF Coaxial Jack PCB Mount Connectors. A range of 50 OHM SMP PCB mount RF coaxial connectors available as straight or right angle coaxial plugs. These 50 OHM SMP RF coaxial cable PCB mount RF coax connectors have a mating interface according to MIL-STD-348A ( ; 819-4257 819-4257 'similar' to) and interface configurations as follows: Stock numbers ; 819-4254 819-4254 , ; 819-4251 819-4251 , ; 819-4257 819-4257 and ; 819-4267 819-4267 are SMP RF coax PCB plugs with a 'Limited Detent' configuration. Stock number ; 819-4260 819-4260 has a 'Smooth Bore' configuration and stock number ; 819-4263 819-4263 has a 'Catchers Mitt' configuration.