The TE Connectivity 1-413889-3 is a crimp ferrule accessory for SMB-style RF connectors. It is machined from a copper alloy with a nickel body finish and a silver appearance, supplied in bulk packaging. This ferrule is designed for use with SMB connectors, where it is crimped over the cable braid and dielectric to secure the cable and provide a ground path. The nickel finish resists corrosion and supports soldering, while the copper alloy body maintains the RF ground integrity expected in 50-ohm SMB interconnects.
What This Ferrule Does in an SMB Assembly
In an SMB connector assembly, the ferrule is the part that gets crimped over the cable jacket and braid after the centre contact is attached. It anchors the cable mechanically and completes the shield connection to the connector body. The copper alloy body of the 1-413889-3 carries the RF return current, and the nickel finish keeps the contact surfaces clean for a low-impedance ground path.