IEC 61169-36:1996
Radio-frequency connectors - Part 36: Microminiature r.f. connectors with snap-on coupling - Characteristic impedance 50 Ohms (Type MCX)
This part of IEC 1169 concerns microminiature coaxial connectors for use with flexible and semi-rigid r.f. cables (96 IEC 50-1-... and 96 IEC 50-2-...). These connectors have a snap-on coupling mechanism, 50 Ω impedance, an operating frequency range of 3 GHz and are known commercially as MCX connectors.