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Hirose U.FL

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Hirose U.FL
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
An embedded RouterBoard 112 with U.FL-RSMA pigtail and R52 mini PCI Wi-Fi card.

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.

Hirose W.FL

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Hirose W.FL
Type RF coaxial connector
Production history
Manufacturer Hirose Electric Group
Cable coaxial
Passband 0-6 GHz

The Hirose W.FL, also known as Amphenol AMMC,[9] is an ultra-small RF connector used in handheld electronic products. It is manufactured by Hirose Electric Group and has a frequency range up to 6 GHz.[10] Compared to its predecessor U.FL it occupies even less area (2.0 mm diameter) and height (1.4 mm).[7]

Like U.FL, W.FL also has many more names assigned to it by those producing compatible connectors.[11]

Notes

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  1. ^ occasionally written "MHF1" or "IPEX1"
  2. ^ Ultraminiature Coax Connector and Cable Assembly Style A Series, Tyco Electronics

References

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  1. ^ a b Surface-mounted, high-frequency coaxial connector. US Patent 5180315 (1993)
  2. ^ "AMC Ultra Miniature Connectors | Amphenol RF". www.amphenolrf.com. Retrieved 2018-10-15.
  3. ^ Ultra Small Surface Mount Coaxial Connectors - Low Profile 1.9 mm or 2.4 mm Mated Height U.FL Series. Hirose data sheet.
  4. ^ MHF I - 9 GHz, 2.5 mm mated height
  5. ^ SMT Ultra-Miniature Coaxial Connectors - Product Specifications
  6. ^ IPX datasheet
  7. ^ a b "U.FL and W.FL Series Connectors - Hirose │ DigiKey". www.digikey.hk. Retrieved 7 November 2019.
  8. ^ "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.
  9. ^ AMMC series datasheet
  10. ^ "Hirose W.FL Coaxial Cable Connector". Wellshow Technology. Retrieved 28 January 2015.
  11. ^ "IPEX MHF3 Mini Coax Connector". Wellshow -RF Connector, RF Coaxial Cable Assembly, GSM, GPS, WiFi Antenna Manufacturer. IPEX MHF3 RF coaxial connector is compatible to Hirose W.FL series, Sunridge MCD series, and Amphenol MHC251/ MHC250 series.
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