IEC 60169: RF Connectors — From BNC to SMA, The Standardization Journey

RF Connectors — From BNC to SMA: The Standardization Journey

IEC 60169-18 specifies RF connector dimensions and electrical characteristics. BNC (bayonet, ≤4 GHz), TNC (threaded, ≤11 GHz), SMA (≤18 GHz), N-type (≤11 GHz high-power) — each with a specific impedance (50 Ω or 75 Ω) and upper frequency limit.