These Molex SMB RF Coaxial PCB mount Jacks have gold plated centre contacts.
Stock number 759-5255 is a Reverse type with male centre contact
Molex SMB RF Coaxial Connectors
The Molex range of SMB RF Coaxial subminiature Connectors are suitable for applications operating up to 4 GHz. The SMB design has a snap on interface for easy connection and disconnection. The SMB interface gives mechanical stability coupled with a smalll size to provide solutions where space is limited.