Meaning
Ultra-miniature interconnects establish a standardized interface for high frequency signals between flexible cables and rigid printed circuit boards. The u.fl connector is a small form factor solution used extensively for internal antenna connections. It occupies a tiny area on the board and supports signals up to six gigahertz.
The system consists of a surface mount male receptacle and a female plug on a thin coaxial cable.
Mechanical Footprint
Saving space on the printed circuit board allows for more features in a handheld device. The u.fl connector receptacle is only a few millimeters square, making it one of the smallest RF interfaces available. Its low height is a primary reason for its use in thin laptops and smart sensors.
Retention Force
A tactile click indicates that the connection is secure. The u.fl connector relies on a snap fit to stay mated under the stress of vibration or drop impacts. While small, the ground shell provides enough grip to prevent the cable from coming loose during the life of the product.
This retention force is carefully balanced to allow for intentional disconnection during servicing without damaging the delicate circuit board pads.
Durability Cycle
These interfaces are designed for a limited number of mating operations. A typical u.fl connector is rated for thirty cycles, which is sufficient for initial assembly and occasional repair. It is not intended for external ports where a cable is plugged and unplugged every day.
