With these connectors there are often a lot of confusion with regards to the naming of the connector, some call the small connector that connects to the PCB (as per our ESP32 module) a IPEX connector some call it a U.FL or UFL....... This is because some manufacturers (such as HiRose) called it one thing and another manufacturer called it another. That being said if you have a module or a PCB with a small connector for an external antenna then this "pigtail" will probably bee the answer.
TAKE NOTE THE SMA PART IS MALE, WE ALSO OFFER THE FEMALE VERSION
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RF Connector Size: 1.5x0.4cm