Coax Connectors 32-450-B3 is an SMB 50 Ohm Straight PCB Jack, Nickel Plated with a 4 Leg Body and Gold Plated Solder Contact in a 120 Pack. The jack has a Through-hole nickel plated 4 leg solder body, with a gold plated solder center contact. The SMB connector is a miniature RF connector that has gained popularity due to its compact size and reliable performance. It features a snap-on mechanism, making it easy to connect and disconnect without the need for additional tools. The SMB connector originated from the older SMA (SubMiniature version A) connector and was designed for applications where space is limited. Despite its small form factor, the SMB connector is capable of handling frequencies up to 4 GHz, making it suitable for various high-frequency applications.