U.FL (UMCC) RF interconnect — 50 Ohm, 6 GHz, SMT jack
The TE Connectivity 1909763-1 is a U.FL (UMCC) series jack with a male pin centre contact, designed for 50 Ohm RF signal paths up to 6 GHz. It uses a snap-on fastening mechanism — no threading or bayonet — so the mated pair engages with a positive click and releases with a straight pull. The body is gold-plated copper alloy, the centre contact is gold-plated copper alloy, and the housing is ivory-coloured LCP dielectric. Insertion loss is 0.24 dB across the band, which keeps the link budget clean for short internal RF jumpers in wireless modules, GPS antennas, or IoT radios.
What the 6 GHz and 0.24 dB specs mean for your RF path
The 6 GHz frequency ceiling covers Wi-Fi 6E, Bluetooth, and sub-6 GHz 5G bands without margin above 6 GHz. The 0.24 dB insertion loss at the connector is low enough that a single mated pair in a module-to-antenna path adds negligible attenuation — the designer should budget for it in the cascade, not chase a lower-loss part. The 50 Ohm impedance matches standard microstrip and coaxial line designs; the snap-on interface keeps the impedance discontinuity short compared to threaded connectors.
SMT termination and board assembly
The -40°C to 90°C operating range covers indoor and outdoor equipment enclosures but not engine-bay or high-temp industrial.