Microchip Technology RN-UFL-SMA6

Overview

RN-UFL-SMA6 from Roving Networks is a 6-inch coaxial RF cable assembly with UF.L (IPEX) male and reverse-polarity SMA female connectors, designed to interface the WiFly GSX RN-131G module with external antennas such as the RN-SMA-RA. It supports 2.4 GHz ISM band operation, delivers ≤0.8 dB insertion loss at 2.45 GHz, and maintains 50 Ω impedance for reliable Bluetooth and Wi-Fi signal transfer in embedded wireless gateways.

For engineers reviewing the RN-UFL-SMA6 datasheet, RN-UFL-SMA6 pinout, RN-UFL-SMA6 application, or RN-UFL-SMA6 equivalent, key selection criteria include RF loss budget, connector polarity compatibility with host modules and antennas, mechanical length constraints in compact enclosures, and 2.4 GHz impedance stability across temperature.

Technical Context

The RN-UFL-SMA6 serves as an impedance-matched RF interconnect between the U.FL/IPEX antenna port of the RN-131G WiFly GSX module and external reverse-polarity SMA antennas. Its construction uses low-loss micro-coax with silver-plated copper conductors and PE dielectric to preserve signal integrity.

It operates exclusively in the 2.40–2.4835 GHz band, with return loss ≥15 dB and VSWR ≤1.4:1 at center frequency. The cable is rated for 500 mating cycles on the U.FL end and features strain relief at both terminations to prevent connector detachment during vibration or flexing.

Key Specifications

Availability

RN-UFL-SMA6 is available at Aetrix Electronics and suitable for Wi-Fi gateway integration, Bluetooth serial bridge deployment, and industrial IoT edge node development requiring stable component supply and repeatable RF performance.

Supply support for RN-UFL-SMA6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Roving Networks was a fabless semiconductor company specializing in embedded wireless connectivity solutions, acquired by Microchip Technology in 2012. It focused on simplifying Wi-Fi and Bluetooth integration for resource-constrained microcontroller systems.

The RN-UFL-SMA6 belongs to Roving Networks' certified antenna interface accessory line, engineered specifically to maintain regulatory-compliant radiated performance when extending the RN-131G module's RF path beyond its PCB footprint.

FAQ

What is the primary function of the RN-UFL-SMA6?

The RN-UFL-SMA6 is a fixed-length RF coaxial cable that bridges the U.FL antenna port of the RN-131G WiFly GSX module to an external reverse-polarity SMA antenna. It preserves 50 Ω impedance and low insertion loss to ensure compliant radiated output power and receive sensitivity-critical for FCC/CE certification of end devices using the RN-UFL-SMA6 with the RN-131G.

Can the RN-UFL-SMA6 be used with modules other than the RN-131G?

The RN-UFL-SMA6 is mechanically and electrically optimized for the RN-131G's U.FL footprint and 2.4 GHz RF characteristics. While it may physically connect to other U.FL–SMA-RP interfaces, its validated performance-including insertion loss, VSWR, and bend tolerance-is documented only for use with the RN-131G and RN-SMA-RA antenna. Substitution requires independent RF validation.

Does the RN-UFL-SMA6 support both Wi-Fi and Bluetooth protocols?

Yes-the RN-UFL-SMA6 supports both Wi-Fi (802.11b/g/n) and Bluetooth (BR/EDR) because it operates across the full 2.40–2.4835 GHz ISM band with flat loss response and stable 50 Ω impedance. Its design enables simultaneous dual-mode operation when used with the RN-131G, which integrates both protocols in a single module.

Is reverse-polarity SMA required on the antenna side?

Yes-the RN-UFL-SMA6 terminates in a reverse-polarity SMA female connector, which must mate with a reverse-polarity SMA male antenna (e.g., RN-SMA-RA). Standard SMA polarity will not thread correctly and risks damaging threads or causing intermittent connection. Polarity mismatch prevents secure mechanical coupling and degrades RF shielding.

What is the maximum recommended bending radius for the RN-UFL-SMA6?

The RN-UFL-SMA6 has a minimum bend radius of 5 mm per manufacturer guidelines. Exceeding this-especially near the U.FL connector-risks conductor deformation, impedance discontinuity, or solder joint fracture on the RN-131G PCB. Routing should avoid sharp folds or compression under mounting hardware to maintain specified insertion loss and VSWR.