SMB Snap-On Receptacle for RF Board-Level Interconnects
The SMBR004D00: This is a surface-mount part, one port, with solder termination for the shield and center contact.
50 Ohm, 3 GHz — What That Means on the Board
At 3 GHz the connector is good for common wireless bands — ISM, cellular, GPS — but not for higher mmWave or 5G FR2. The snap-on fastening gives a quick, tool-less mate that holds under moderate vibration, but it is not a threaded or bayonet lock — expect lower pull-off force than an SMA or BNC. The datasheet should list the specific pull-off force; it is not in the summary here.
Surface-mount footprint means the board layout must account for the pad geometry and ground plane clearance to maintain 50 Ohm impedance through the launch.