SMA connector is a type of RF coaxialconnector developed in the 1960s to make it easier to coaxial cables. It hascompact design, high durability and outstanding electronic performance havemade it one of the most widely used connectors in RF and Microwave applicationsacross the board.

SMB Sub-miniature version B) connectors are coaxial RF connectors developedin the 1960s. Which is smaller than SMA connectors with a snap-on couplingand are available in either 50 Ω or 75 Ω impedance. They offerexcellent electrical performance from DC to 4 GHz.