### Overview of the H.FL-R-1 Connector The **H.FL-R-1** is a high-frequency, surface-mount (SMT) coaxial connector developed by **Hirose Electric**. It is part of the H.FL series, known for being one of the lowest-profile miniature connectors used in high-density electronic assemblies. --- ### Technical Specifications | Feature | Specification | | :--- | :--- | | **Connector Type** | Receptacle (Male Pin) | | **Mounting Type** | Surface Mount (SMT) | | **Frequency Range** | DC up to 3 GHz | | **Impedance** | 50 Ohms | | **V.S.W.R.** | 1.3 Max (0 to 3 GHz) | | **Mated Height** | 3.0 mm (when used with H.FL plug) | | **Contact Plating** | Gold Plated | --- ### Key Electronic Components & Materials 1. **Center Contact:** Usually made of brass or phosphor bronze with **gold plating**. Gold is used to ensure low contact resistance and prevent oxidation over long periods. 2. **Insulator:** Typically made of high-performance engineering plastics (like Liquid Crystal Polymer - LCP). These materials have high heat resistance to withstand lead-free reflow soldering temperatures. 3. **Outer Shell (Ground):** Made of phosphor bronze with silver or gold plating. This part provides the grounding path and the mechanical locking mechanism for the mating plug. 4. **Solder Leads:** Designed for SMT processes. The "R-1" designation often refers to the specific tape-and-reel packaging or minor design variations for automated pick-and-place machines. --- ### Applications The H.FL-R-1 is used in devices where space is extremely limited and signal integrity for radio frequencies (RF) is critical: * **Mobile Communications:** Smartphones, cellular modules (GSM, LTE). * **Wireless Connectivity:** Wi-Fi routers, Bluetooth modules. * **GPS Devices:** Handheld and automotive navigation systems. * **IoT Hardware:** Compact sensor nodes and wireless gateways. --- ### Comparison: H.FL vs. U.FL While both are Hirose standards, they differ in size: * **H.FL:** Larger, slightly more robust, with a mated height of **3.0 mm**. * **U.FL:** Much smaller and more common in modern smartphones, with a mated height of **1.9 mm to 2.5 mm**.