__NOTOC__ Hirose U.FL, I-PEX MHF, AMC or UMCC is a miniature RF connector for high-frequency signals up to 6 GHz manufactured by

Hirose Electric Group is a Japanese company specializing in the manufacturing of electric connectors. The company was founded in 1937 as Hirose Manufacturing, changed its name to Hirose Electric in August 1963 and started selling internationally in 1968. Hirose al ...

, I-PEX, and others. U.FL connectors are commonly used in applications where space is of critical concern, such as in smartphones and Laptop WiFi cards. U.FL connectors are commonly used inside laptops and embedded systems to connect the

Wi-Fi Wi-Fi () is a family of wireless network protocols, based on the IEEE 802.11 family of standards, which are commonly used for local area networking of devices and Internet access, allowing nearby digital devices to exchange data by radio wav ...

antenna to a

Mini PCI Peripheral Component Interconnect (PCI) is a local computer bus for attaching hardware devices in a computer and is part of the PCI Local Bus standard. The PCI bus supports the functions found on a processor bus but in a standardized format t ...

, Mini PCIe or M.2 WiFi card. Another common use is connecting GPS antennas. Female U.FL connectors are not designed with reconnection in mind, and they are only rated for a few reconnects (approximately 30 mating cycles) before replacement is needed. The female U.FL connectors are generally not sold separately, but rather as part of a

pigtail A woman with long pigtails and braids. In the context of hairstyles, the usage of the term pigtail (or twin tail or twintail) shows considerable variation. The term may refer to a single braid, but is more frequently used in the plural ("pi ...

with a high-quality 1.32 mm doubly shielded cable, which allows for a low-loss connection. The male connectors are surface-mounted and soldered directly to the printed circuit board. They are designed to have a characteristic impedance of 50 ohms. The mated connection is only 2.5 mm high and takes as little as 9 mm² (3.0 × 3.1 mm²) of board space. Much like many other electronic components, Hirose U.FL connectors were protected by patentsSurface-mounted, high-frequency coaxial connector.
US Patent 5180315 (1993) and trademarks. However, compatible third party connectors are available under many other names, e.g. Sunridge MCB.

Hirose W.FL

The Hirose W.FL, also known as Amphenol AMMC, is an ultra small RF connector used in handheld electronic products. It is manufactured by

and has a frequency range up to 6 GHz. Compared to its predecessor U.FL it occupies even less area (2.0 mm diameter) and height (1.4 mm). Like U.FL, W.FL also has many more names assigned to it by those producing compatible connectors.

Notes

References

External links

U.FL Series

SMT Ultra-Miniature Coaxial Connectors

UMCC — Ultraminiature Coax Connector and Cable Assembly Series

Official website
{{RF Connectors Navbox RF connectors