The **FL-R-PC-11** is a specific type of ultra-miniature Surface Mount (SMT) coaxial connector, primarily developed by manufacturers like **Hirose Electric** (often part of their FL series). It is designed for high-frequency signal transmission in compact electronic devices. --- ### 1. Technical Specifications The following table outlines the typical electrical and mechanical characteristics of the FL-R-PC-11: | Parameter | Specification | | :--- | :--- | | **Connector Type** | Receptacle (Female) | | **Mounting Type** | Surface Mount (SMT) | | **Impedance** | 50 Ohms | | **Frequency Range** | DC to 6 GHz | | **V.S.W.R.** | 1.3 Max (0 to 3 GHz), 1.5 Max (3 to 6 GHz) | | **Rated Voltage** | 60V AC (rms) | | **Contact Resistance** | 20 mΩ Max | | **Mating Height** | Approx. 0.9mm to 1.2mm (depending on plug) | --- ### 2. Key Electronic Components & Materials The performance of the FL-R-PC-11 relies on high-quality materials to maintain signal integrity at microwave frequencies: * **Center Contact:** Usually made of **Phosphor Bronze** with gold plating. Gold is used to prevent oxidation and ensure a low-resistance path for the signal. * **Insulator:** High-performance engineering plastic (such as **LCP - Liquid Crystal Polymer**). This material has a low dielectric constant and can withstand high temperatures during reflow soldering. * **Shell/Ground:** Typically **Phosphor Bronze** with silver or gold plating. This acts as the outer conductor (shielding) to prevent Electromagnetic Interference (EMI). --- ### 3. Applications Due to its extremely low profile and high-frequency capabilities, the FL-R-PC-11 is commonly found in: 1. **Mobile Devices:** Smartphones and tablets for internal Wi-Fi/Bluetooth antenna connections. 2. **Wireless Modules:** M.2 cards, GPS modules, and LTE/5G transceivers. 3. **IoT Hardware:** Compact sensors and wearables requiring RF connectivity. 4. **Testing:** Used as a test point on PCBs for checking RF signal strength during production. --- ### 4. Comparison: FL vs. U.FL While the FL series is similar to the more common **U.FL** series, there are subtle differences in physical footprint and mating height. ```python # Typical Footprint Consideration connector_info = { "Series": "FL Series", "Model": "FL-R-PC-11", "Primary_Advantage": "Ultra-low profile for space-constrained designs", "Mating_Cycle_Life": 30 # Typical insertions/extractions } ``` ---