SMB (SubMiniature version B) RF Connectors are compact coaxial connectors that have a quick-connect, durable snap-on coupling mechanism that allows for quick and tool-free installation in high-density applications. Smaller than SMA connectors, standard SMB connectors operate up to 4 GHz, with extended connectors operating up to 10GHz, and they have 50 or 75 Ohm. Common applications include telecommunications, base stations, and GPS.