 Male U.FL connector | |||
| Type | RF coaxial connector | ||
|---|---|---|---|
| Production history | |||
| Designed | 1991[1] | ||
| Manufacturer | Hirose Electric Group | ||
| General specifications | |||
| Diameter | 2.0 mm (0.079 in) | ||
| Cable | Coaxial | ||
| Passband | Typically 0-6 GHz | ||
Hirose U.FL, I-PEX MHF I[a], AMC[2] or UMCC[b] is a miniature RF connector for high-frequency signals up to 6 GHz manufactured by Hirose Electric Group,[3] I-PEX,[4] and others.
U.FL connectors are commonly used in applications where space is of critical concern, such as in smartphones and laptop Wi-Fi cards. U.FL connectors are commonly used inside laptops and embedded systems to connect the Wi-Fi antenna to a Mini PCI, Mini PCIe or M.2 Wi-Fi 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[5]) before replacement is needed. The female U.FL connectors are generally not sold separately, but rather as part of a pigtail with a high-quality 1.32 mm doubly shielded cable, which allows for a low-loss connection, insulated with fluorinated resin.
The male connectors are surface-mounted (SMT) and soldered directly to the printed circuit board (PCB). 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.[6][7][8]
Much like many other electronic components, Hirose U.FL connectors were protected by patents[1] and trademarks. However, compatible third party connectors are available under many other names, such as Sunridge MCB.
- ^ a b Surface-mounted, high-frequency coaxial connector. US Patent 5180315 (1993)
- ^ "AMC Ultra Miniature Connectors | Amphenol RF". www.amphenolrf.com. Retrieved 2018-10-15.
- ^ Ultra Small Surface Mount Coaxial Connectors - Low Profile 1.9 mm or 2.4 mm Mated Height U.FL Series. Hirose data sheet.
- ^ MHF I - 9 GHz, 2.5 mm mated height
- ^ SMT Ultra-Miniature Coaxial Connectors - Product Specifications
- ^ IPX datasheet
- ^ "U.FL and W.FL Series Connectors - Hirose │ DigiKey". www.digikey.hk. Retrieved 7 November 2019.
- ^ "PDF of Hirose introduction to W.FL and U.FL Coaxial connector series Product Training Module (PTM)" (PDF). Mouser Electronics. Archived (PDF) from the original on 2022-06-12. Retrieved 2024-07-13.
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