These Micro BNCs are bayonet-coupling, 75 ohm types, 51% smaller than standard BNC connectors and are intermatable with similarly sized (yet differently named - see Ordering Note for further details) High Density types by other manufacturers. They allow four times the packing-density of conventional BNCs and are found on the rear of equipment with multiple connections including routers, distribution amplifiers, format converters and many units utilising SFP modules. Harris, Evertz, Miranda and many other leading manufacturers fit mini BNC, micro BNC or HD BNC sockets either as standard or as an option to their routers and high density equipment.
Micro BNCs offer a conventional mating action and higher performance than the equivalently sized DIN 1.0/2.3 push-pull connector and remain mated even when subject to the high levels of vibration experienced by OB, Fly Pack and touring equipment in transit. They exceed the requirements of SMPTE 292M for HD-SDI and SMPTE 424M for 3GHD-SDI (1.5 GHz) and are suitable for frequencies up to 6GHz.
Centre and outer mating contacts are gold-plated, the body is nickel-plated. They are offered packed singly, or in bulk packs of 100, supplied in plastic compartment trays. The centre contact is crimped with a conventional 'plier' type, square cavity, crimp tool and the outer braid is secured with a hexagonally crimped sleeve.
The Micro BNC series is used to achieve a very high density of connections on equipment rear panels and thus requires the use of the dedicated slim-line fitting and removal tool to mate and un-mate the connector. Splines on the tool locate in slots machined into locking barrel (nut) providing not only a method for turning the barrel to mate or un-mate it, but a useful long-handled positioner tool to engage the connector on to the rear of equipment in very confined spaces.
48-5021, 48-5031 are suitable for Canford group J cables including Belden 179DT.
48-5022, 48-5032 are suitable for Canford group X cables including Canford SDV, SDV-LFH, SDV-X-LFH, Belden 1855ENH, Draka 0.6/2.8AF and HD PRO 0.6/2.8AF. They also fit Belden 1855A, but due to the slightly smaller dielectric in 1855A, type 48-5023, 48-5033 are recommended.
48-5023, 48-5033 are suitable for Belden 1855A (only).
Ordering Note: Whilst COAX call these 'Micro BNC', they are interchangeable with the Amphenol 'HD BNC' range (something to do with trademarks we are told!). Please don’t blame Canford for the confusion!