Co axial connectors Coaxial connectors/ electronic connectors have the advantages of small, light, high reliability, vibration-proof and superior performances. The models of coaxial connectors are mcx, mmcx, l6, l8, l9, c2, c3, sma, smb, smc, bnc, tnc, and n. They are suitable for connecting rf. Coaxial cables in radio electrical equipment and instruments.