The **CSI-RGFB-300-UFFR** is a specialized high-frequency RF (Radio Frequency) coaxial cable assembly. It is primarily used for internal microwave signal routing where space is limited and high signal integrity is required. --- ## 1. Component Specifications The part number typically decomposes into the following technical attributes: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Connector Type A** | U.FL / IPEX | Ultra-miniature SMT connector. | | **Connector Type B** | SMA Female | Standard bulkhead connector (usually gold-plated). | | **Cable Type** | 1.13mm Coaxial | Ultra-thin micro-coax cable. | | **Length** | 300mm | The physical length of the assembly. | | **Impedance** | 50 Ohms | Standard impedance for RF communication. | | **Frequency Range** | DC to 6 GHz | Supports Wi-Fi 6, Bluetooth, and LTE bands. | --- ## 2. Key Electronic Characteristics ### Signal Integrity * **Low Insertion Loss:** Despite the thin 1.13mm diameter, the cable is designed to minimize signal attenuation over the 300mm span. * **Shielding:** Features a silver-plated copper braided shield to prevent Electromagnetic Interference (EMI) and maintain a high Signal-to-Noise Ratio (SNR). ### Physical Interface * **U.FL Connector:** A "snap-on" miniature connector often found on PCB modules (like Wi-Fi cards). It has a very low profile (approx. 2.5mm mated height). * **SMA Bulkhead:** The "RGFB" designation usually refers to a **Rear-Mount Global Female Bulkhead**. This allows the connector to be mounted through a device chassis, secured by a nut and washer. --- ## 3. Typical Applications This specific assembly is commonly found in: 1. **Industrial IoT Gateways:** Connecting an internal wireless module to an external antenna. 2. **Embedded Systems:** Routing RF signals from a PCB to a casing-mounted SMA port. 3. **Consumer Electronics:** Used in high-end routers or mini-PCs for internal Wi-Fi/Bluetooth antenna extension. --- ## 4. Technical Constraints ```markdown * **Bend Radius:** Minimum bend radius is typically ~5mm. Over-bending can damage the dielectric and cause signal reflection (VSWR issues). * **Mating Cycles:** U.FL connectors are rated for limited mating cycles (approx. 30 cycles), whereas the SMA side is much more durable (500+ cycles). * **Temperature Rating:** Typically rated for -40°C to +85°C. ```