MMCX RF Connector Sourcing from China
1 resources tagged with "Mmcx"
MMCX (Micro-Miniature Coaxial) is a snap-on RF connector rated to roughly 6 GHz, sitting between the larger SMA and the tiny U.FL/IPEX in size — common on GPS, Wi-Fi, and antenna pigtails where you need a quick disconnect but not the fragility of a U.FL. When sourcing from China the two things that separate a usable part from a bad one are VSWR (a good MMCX holds VSWR under about 1.3 to 3 GHz) and plating: gold over nickel on the center pin, not bare brass that corrodes and lifts insertion loss after a few mating cycles. We verify plating and VSWR on samples before bulk.
MMCX gives a snap-fit RF connection rated to about 6 GHz with a few hundred mating cycles — more durable than U.FL but bulkier. The common pitfall is cheap plating: insist on gold-plated contacts and a measured VSWR figure, since bare or thin plating degrades insertion loss quickly.
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FAQ
What frequency range does MMCX support?
MMCX is usable to roughly 6 GHz, which covers Wi-Fi, GPS, and most sub-6 cellular. For higher frequencies move to SMA or specialized connectors.
What should I check when sourcing MMCX from China?
Ask for a VSWR figure (good parts stay under ~1.3 to 3 GHz) and confirm gold-plated center and outer contacts. Thin or bare plating raises insertion loss and fails after limited mating cycles.
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