The part number **M2PHS2H-CD-R2/Q** refers to a high-density, high-speed connector component, typically part of a modular backplane system or a specific interconnect assembly used in telecommunications, networking, or aerospace computing. Below is a breakdown of the electronic and mechanical characteristics associated with this class of component. --- ### 1. Component Overview This part is a **Mezzanine or Backplane Header**. It is designed to facilitate the connection between two Printed Circuit Boards (PCBs), either in a parallel (stacking) or perpendicular (backplane) orientation. | Feature | Specification Details | | :--- | :--- | | **Component Type** | High-Density Header / Connector | | **Signal Integrity** | Optimized for High-Speed Differential Pairs | | **Mounting Style** | Surface Mount (SMT) or Press-Fit (depending on footprint) | | **Contact Material** | Copper Alloy with Gold (Au) over Nickel (Ni) plating | | **Housing Material** | High-Temperature Thermoplastic (LCP) | --- ### 2. Breakdown of the Part Code While specific manufacturer prefixes can vary, the nomenclature generally follows this logic: * **M2P:** Often indicates the product series (e.g., Micro 2mm Pitch or Modular 2-Piece system). * **HS2H:** **H**igh **S**peed, **2**-row or **2**mm, **H**eader configuration. * **CD:** Refers to the specific pinout configuration or "Coding" (used to prevent incorrect insertion). * **R2:** Indicates the revision level or the row density (e.g., Row 2 / 2-Row). * **SLASHQ (/Q):** Usually designates **Qualification** level (e.g., Space-grade, Automotive-grade, or QPL - Qualified Parts List). --- ### 3. Key Electronic Characteristics #### A. High-Speed Performance These connectors are engineered to minimize **Crosstalk** and **Insertion Loss**. They often feature internal shielding or specific ground-plane arrangements to support data rates exceeding 10 Gbps or 25 Gbps per channel. #### B. Contact Resistance To ensure signal power integrity, the contacts are designed with very low resistance (typically < 20-50 mΩ). The gold plating prevents oxidation, ensuring a reliable electrical path over thousands of mating cycles. #### C. Power Handling While primarily for signals, these connectors can often handle a small amount of current per pin (typically 0.5A to 1.5A). For higher power requirements, specific power modules are usually added alongside the signal header. --- ### 4. Physical Configuration ```text Structure Diagram (Conceptual): [ Housing (LCP) ] |-- [ Signal Pins (Gold Plated) ] |-- [ Ground Shields (Low EMI) ] |-- [ Alignment Pegs (Polarization) ] ``` ---