Female Body

Male Body


50 Ω

Maximum Operating Frequency

6.00 GHz

Coupling Mechanism

Interface Standards

The Micro CoaXial (MCX) is a miniature RF connector featuring snap-on coupling. The series is ideal for lightweight and space-limited applications, with has the same inner and outer contact interface dimensions as SMB but 30% smaller. The connector design has been standardised under European CECC 22220, and IEC 61169-36 specifications. Despite standards identifying an operating frequency to 3 GHz, most manufacturers commercially offer connectors to 6 GHz.


The connector was developed in the 1980s by Huber+Suhner, of which MCX is a trade name.


MCX connectors are widely used in GPS, modems, and Wi-Fi hardware due to their low cost and good broadband performance DC to 6 GHz, covering most RF applications.


Also available in a 75 Ω variant.

Male Dimensions Female Dimensions
MCX male plug RF connector CAD drawing MCX female socket RF connector CAD drawing
Code Min (mm) Max (mm) Code Min (mm) Max (mm)
A - - A -
B - Ø 3.00 B Ø 3.05 nom.
C Ø 2.00 - C - Ø 1.98
D 2.80 - D 2.60 2.80
E Ø 0.48 Ø 0.53 E  
F - Ø 3.80 F Ø 3.60 Ø 3.75
G 4.15 - G 2.30 2.80
H 0.15 - H - -
I 0.00 0.30 I 4.00 4.12
J 2.80 3.20 J - -