The **M2PHS2H-151-R2/Q** is a high-density, high-performance connector typically used in telecommunications, server infrastructure, and industrial computing applications. This part number refers to a specific configuration of a **High-Speed Mezzanine Connector**. --- ### 1. General Specifications These connectors are designed to facilitate board-to-board connections with high signal integrity. | Feature | Specification | | :--- | :--- | | **Part Series** | M2P (High-Speed Mezzanine) | | **Pitch** | Typically 0.5mm to 1.0mm (varies by sub-series) | | **Pin Count** | 151 Pins | | **Orientation** | Vertical / Straight | | **Material** | High-temperature thermoplastic (LCP) | | **Plating** | Gold on contact area, Tin on solder area | --- ### 2. Breakdown of the Part Number While specific manufacturer codes (like Samtec or Amphenol) can vary slightly, the nomenclature usually follows this logic: * **M2P:** Denotes the series, often signifying a "Mezzanine" style connector with high-density pinouts. * **HS2H:** Indicates the **High-Speed** rating and the height configuration (e.g., 2mm height or specific mating height code). * **151:** The specific **Pin Count** or circuit count. * **R2:** Revision 2 or specific packaging/reel designation. * **Q:** Often refers to **Differential Pair** layouts (Quadrilateral/Quad) or a specific plating/quality standard. --- ### 3. Key Electronic Characteristics #### A. Signal Integrity (SI) These parts are engineered for low crosstalk and minimal signal loss. They support high-speed protocols such as: * PCIe Gen 3 / Gen 4 * SATA / SAS * 10GbE / 40GbE #### B. Mechanical Robustness * **Wiping Distance:** Ensures a reliable electrical connection even in high-vibration environments. * **Shielding:** Many "Q" designated parts include integrated ground planes or shielding to mitigate EMI (Electromagnetic Interference). #### C. Typical Applications 1. **Blade Servers:** Connecting a CPU board to a storage or networking riser. 2. **FPGA Development Boards:** Connecting daughtercards to the main processing unit. 3. **Telecom Switches:** High-density backplane or midplane routing. --- ### 4. Mounting Example (PCB Footprint) Since this is a surface mount (SMT) component, the soldering process usually requires precise stencil alignment. ```c // Design Constraint Example #define CONNECTOR_PITCH 0.50 // mm #define TOTAL_PINS 151 #define MAX_VOLTAGE 125 // Volts AC ``` ---