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.
Alias
Micro-Miniature CoaXial
Impedance
50 Ω
Max. Operating Frequency
6.0 GHz
Mechanism
Snap-on Coupling
History
The connector was developed in the 1990s presumably by Huber+Suhner who developed the original MCX connector.
Applications
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
| Legend | Min | Max |
|---|---|---|
|
A
|
2.3500
|
2.4000
|
|
B
|
1.8000
|
|
|
C
|
1.5800
|
1.6200
|
|
D
|
2.8300
|
|
|
F
|
0.2000
|
|
|
G
|
0.3800
|
0.4200
|
|
H
|
0.0000
|
0.2500
|
|
I
|
1.2300
|
|
|
J
|
2.0800
|
2.1200
|
|
K
|
2.7000
|
|
|
Alpha (°)
|
30.0000
|
|
|
Beta (°)
|
29.0000
|
31.0000
|
Female Dimensions
| Legend | Min | Max |
|---|---|---|
|
A
|
2.4100
|
|
|
B
|
0.7000
|
0.7000
|
|
D
|
2.8800
|
2.9200
|
|
E
|
3.0000
|
3.0400
|
|
G
|
1.4000
|
|
|
H
|
0.9000
|
1.2000
|
|
I
|
1.5700
|
1.6300
|
|
J
|
2.2600
|
2.3400
|
|
K
|
2.6900
|
|
|
L
|
0.1400
|
0.2300
|
|
Alpha (°)
|
28.0000
|
32.0000
|
|
Beta (°)
|
68.0000
|
72.0000
|
|
Gamma (°)
|
13.0000
|
17.0000
|