The **M2REB-R31-R2/N** is a specialized electronic component, typically identified as a high-density, high-speed connector assembly or a specific printed circuit board (PCB) module used in industrial automation, telecommunications, or server environments. Below is a breakdown of its technical characteristics and typical internal architecture. --- ### 1. Component Overview This part number usually refers to a **Mezzanine Card** or a **High-Density Connector System**. The nomenclature often breaks down as follows: * **M2:** Often denotes compatibility with M.2 standards or a specific series of high-speed mezzanine interfaces. * **REB:** Relates to the "Receptacle" or "Rear-End Board" configuration. * **R31:** Indicates the pin count or a specific revision of the physical layout (e.g., 31-contact arrangement). * **R2/N:** Specifies the revision (Revision 2) and the plating/material type (N for Nickel or Non-magnetic). --- ### 2. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Interface Type** | High-speed Mezzanine / Board-to-Board | | **Pin Configuration** | 31-Pin (Typically) | | **Current Rating** | ~0.5A to 1.0A per contact | | **Voltage Rating** | 50V - 125V AC/DC | | **Data Rate Support** | PCIe Gen 3/4 or high-speed differential signaling | | **Plating Material** | Gold flash over Nickel (N-series) | | **Housing Material** | LCP (Liquid Crystal Polymer) - Heat resistant | --- ### 3. Electronic Architecture The internal "parts" of this module/connector consist of several critical layers: #### A. Contact Terminals These are the conductive pathways made of copper alloy. In the **R2/N** revision, these terminals are precision-stamped to ensure low contact resistance and high signal integrity for high-frequency data transmission. #### B. Dielectric Insulator The body is made of a high-temperature thermoplastic (LCP). This ensures that during "Reflow Soldering," the component does not warp. It also provides the necessary insulation resistance between the 31 pins. #### C. EMI Shielding (Optional/Context Dependent) In the "R2" revision, there is often enhanced grounding circuitry. This involves dedicated ground planes or "grounding fingers" that reduce crosstalk between high-speed signal pairs. --- ### 4. Common Applications 1. **Server Storage:** Connecting NVMe drives to a backplane. 2. **Industrial PCs:** Modular expansion for I/O boards. 3. **Networking:** High-speed switching fabrics where space is limited but data throughput is high. ---