IEC/PAS 61169-40:2008(E) is a sectional specification providing information and rules for preparation of detail specification of 2.4 series R.F connectors together with the pro-forma blank detail specification. The 2.4 series connectors with characteristic impedance 50 ω are used for millimeter wave applications, connecting with RF cables or microstrips. The operating frequency limit is up to 50 GHz. It also prescribes mating face dimensions for high performance connectors grade 1, dimensional detail of standard test connectors grade o, gauging information and tests selected from QC 22000 (IEC 61169-1) applicable to all detail specifications relating to 2.4 series RF connectors.