Female Body

Male Body


50 Ω

Maximum Operating Frequency

6.00 GHz

Coupling Mechanism

Interface Standards

The Micro-Miniature CoaXial (MMCX) is a miniaturised version of the MCX RF connector and features snap-on coupling. The series is only 2.4 mm in diameter, ideal for lightweight and space-limited applications. MMCX has the same inner and outer contact interface dimensions as SMB but 45% smaller. The connector utilises a slot-less design to minimise RF leakage, and has been standardised under IEC 61169-52 specification.


The connector was developed in the 1990s presumably by Huber+Suhner who developed the original MCX connector.


MMCX 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
MMCX male plug RF connector CAD drawing MMCX female socket RF connector CAD drawing
Code Min (mm) Max (mm) Code Min (mm) Max (mm)
A - 2.40 A 2.59 -
B 1.57 1.63 B 1.57 1.63
C 2.69 - C 3.00 3.05
D 1.45 - D 2.87 2.90
E - 0.25 E 2.41 -
F 0.38 0.43 F - 0.23
G - 0.20 G 0.231 0.234
      H 0.89 1.19
      I 0.71 0.71