SMA Jack for Board-Edge RF — 50 Ohm, 18 GHz, SMT
The 0732511142: The connector mounts into a board-edge cutout and solders directly to the PCB surface — the shield termination is solder, the centre contact is solder as well, so the whole RF launch is established in one reflow pass.
Mounting Detail — Board Edge, Not Panel
This SMA jack is specified for board-edge, surface-mount installation — it is not a bulkhead or panel-mount part. The threaded fastening is on the connector body itself, so the mating SMA plug tightens directly against the jack's face, not through a panel. If your enclosure requires the connector to pass through a panel wall, the 0732511291 is the correct pick; for a PCB-edge launch, this 0732511142 is the one.
The 50 Ohm impedance and 18 GHz maximum frequency are the two numbers that define the signal envelope. At 18 GHz, the VSWR and insertion loss are governed by the PTFE dielectric and the precision of the centre contact geometry — the polytetrafluoroethylene (PTFE) insulator keeps the dielectric constant stable across temperature, so the impedance holds from DC through the full band.