TE Connectivity Cat 3 RJ22 Standard Profile Modular JacksFrom TE Connectivity a range of 4 pole RJ connectors. These RJ22 modular jack connectors have nickel plated phosphor bronze contacts and are constructed from PA 9T gf nylon housing. The RJ22 modular jacks are SMT mounting and have a top entry PCB mount option. Typical applications for these modular jacks would be telephones, routers servers and switches.