SMB panel-mount receptacle — 50 Ohm, 4 GHz, now obsolete
The 228215-1: It mounts in a panel bulkhead using a front-side nut and includes the lockwasher and nut in the package. The snap-on fastening gives a quick, secure mate for test points or panel feed-throughs where the connector stays mated for extended periods.
Obsolete — sourcing the 228215-1 today
No direct form-fit-function replacement is documented in the available records.
This is a male-pin receptacle — it mates with an SMB female jack (typically on a cable or PCB mount). The snap-on coupling locks with an audible click; no tooling is needed. Termination is solder cup: strip the coaxial cable centre conductor, tin it, and solder into the cup. The nickel-plated brass body gives a corrosion-resistant shell for indoor or sheltered outdoor use.