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U.FL Cables & Adapters

We offer three options of thickness of cable for U.FL cables:  All three have an impedance of 50 Ohm - compatible with all typical wireless applications:

1.13mm mini-coaxial cable (50 Ohm): This is a very thin and flexible cable, with a black jacket. When connecting U.FL connector to a jack on a miniPCI card or board, sometimes the tight space requires the use of 1.13mm cable, because it is very thin and flexible: It is not always necessary to use 1.13mm cable, but on occasion it is necessary to use 1.13mm cable, to prevent the U.FL connector from popping off the U.FL jack.

1.32mm mini-coaxial cable (50 Ohm):  This is very thin and flexible, is double-shielded for lower signal loss than 1.13mm, and has a black jacket. The key difference between 1.13mm cable and 1.32mm is that the tin plated, copper wire braided, outer conductor is a single shield of braiding in 1.13mm coax and is  double-braided in 1.32mm coax. The double braiding in 1.32mm cable reduces signal loss (attenuation), and thereby provides greater performance.  The first and second shield layers in 1.32mm coax cable may also be made from silver covered copper braid. 

If you want us to proviide your U.FL cables with 1.32mm coax, please contact us for a special order. 

RG174: This is a low-loss coax option for U.FL (which is too large for MHF4 or W.FL).  RG174 is about 3mm diameter (vs 4mm for 100-series) and is not double shielded.  It's 2.65X thicker than 1.13mm but it is very flexible/easily bendable coax.  It has a black jacket. This cable has much lower signal loss (attenuation) per meter than 1.13mm, which translates into better performance.  Cable is equivalent to LMR-100 in thickness.  Since the LMR-100 equivalent coax has lower signal loss:  If this cable works for you without the U.FL connectors popping off the jacks, then this thicker coax is the better solution.  You can use a hot glue gun to secure the jack onto the PCB, in which case, of course, the thicker cable will not be a problem:  This is the best way.

We can make special orders of U.FL cables with 1.32mm coax or RG174 (both of which are lower signal loss options) or 1.13mm cable, for better flexibility.  1.32mm is very thin and flexible, like 1.13 coax.

U.FL Connectors' Gender is confusing because a U.FL jack, such as you would find on a miniPCI male wireless card or board is the male U.FL connector. So U.FL gender is an exception to the rule for most other RF connector types, for which "jack" is synonymous with "female connector."  See the photo at the top-left of the page:  U.FL male and female.

UFL is a tiny radio frequency connector that is applicable for high frequency signals up to 6GHz band.  They have a wide range of applications as antenna cable connectors, most commonly for applications in which space is a key consideration, such as embedded systems, including as the antenna jack on MiniPCI cards and as GPS antenna connectors.

Male UFL connectors are highly rigid, as they need to be embedded directly on to a circuit board. They take only about 9 mm2 in space. Female UFL connectors come as the termination on an antenna cable.  They can be used for up to about 30 mating incidences, after which they will have deteriorated or been damaged, and a replacement is required.

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