Micro-Miniature Coaxial Connectors Amphenol RF Micro-Miniature Coaxial Connectors (MMCX) (MicroMate™) is a micro-miniature connector series with a snap-lock mechanism, allowing for 360° rotation. The MMCX connectors are available in straight and right-angle plugs and printed circuit board connectors. This 6GHz and 50Ω interconnect system is available in surface-mount, edge-card, and cable connectors. Typical applications include antennas, telecom, instrumentation, and broadband.