The **47LM-161R-R/Q** refers to a high-density, low-profile interconnect system, specifically a **LGA (Land Grid Array) Socket** or a high-speed mezzanine connector typically used in server, networking, and high-performance computing environments. Below is a technical breakdown of its characteristics and electronic components. --- ### 1. Technical Specifications The part is designed for high-signal integrity and high-density pin counts. | Feature | Specification | | :--- | :--- | | **Product Type** | LGA Socket / Mezzanine Interconnect | | **Pin Count** | Typically 161 Pins/Positions (based on nomenclature) | | **Pitch** | Fine Pitch (e.g., 0.5mm to 1.0mm) | | **Contact Plating** | Gold (Au) over Nickel (Ni) | | **Termination Style** | Surface Mount (SMT) or Press-fit | | **Application** | CPU to Board, Module to Board, or Board-to-Board | --- ### 2. Physical Construction The electronic parts of this assembly consist of three main layers: 1. **The Housing (Insulator):** Made of high-temperature Liquid Crystal Polymer (LCP) to withstand reflow soldering temperatures. It prevents electrical shorts between the high-density pins. 2. **The Contacts (Pins):** Copper alloy pins designed with a specific "spring" geometry to ensure constant pressure against the mating surface, maintaining electrical continuity under vibration. 3. **The Interface:** The "R-R/Q" designation often implies specific packaging or revision types (e.g., Tape & Reel packaging for automated pick-and-place assembly). --- ### 3. Electrical Characteristics These parts are engineered to handle high-speed data transfer while minimizing signal loss. * **Current Rating:** Usually 0.5A to 1.0A per pin (depending on temperature rise). * **Voltage Rating:** Typically 30V to 100V AC/DC. * **Impedance Control:** Designed for 85-ohm or 100-ohm differential signaling to support protocols like PCIe Gen 4/5 or Ethernet. * **Contact Resistance:** Very low (often <20mΩ) to minimize heat generation. --- ### 4. Common Applications * **Server Modules:** Connecting specialized daughtercards to a motherboard. * **Telecommunications:** High-speed switching and routing hardware. * **Embedded Systems:** Industrial computers requiring replaceable processing modules. ---