SMB Connectors (Sub-miniature version B) are small RF coaxial connectors. They feature a Snap-on coupling mechanism making them ideal for field install applications and are available in 50 Ω and 75 Ω impedances and support applications with a requirement of DC to 4 GHz.There are many variants of SMB connector, the choice depends on the application it is used for. SMB connectors are used with a thinner coaxial cable and are available straight or right angled.
Unlike other RF connectors, SMB connectors' gender can be confusing. The Female or (jack) has a male centre pin and the Male (plug) has a female basket or hole. SMB connectors are useful in environments where space saving is crucial. Typical applications include Base stations, Antennas, Radio boards, GPS (Global Positioning Systems), PC/LAN (Local Area Network)