The part number **M2AS1-5444-R2** generally refers to a specialized **Board-to-Board (B2B) or High-Speed Connector**, typically manufactured by companies like **Foxconn (Hon Hai Precision)** or similar high-end electronic component suppliers. These are commonly used in laptops, servers, and mobile devices to connect motherboards to daughterboards (like Wi-Fi cards, SSD interfaces, or display modules). Below is a breakdown of the technical specifications and characteristics associated with this class of component. --- ### 1. General Specifications | Feature | Specification | | :--- | :--- | | **Component Type** | Board-to-Board Header / Slot Connector | | **Pitch** | Typically 0.5mm or 0.4mm (High Density) | | **Number of Pins** | 54-60 pins (depending on specific revision) | | **Mounting Type** | Surface Mount (SMT) | | **Orientation** | Right Angle or Straight (Vertical) | | **Plating** | Gold (Au) flash over Nickel (Ni) for corrosion resistance | --- ### 2. Key Electronic Characteristics * **Signal Integrity:** Designed for high-speed data transmission. It supports differential signaling protocols such as **PCIe Gen 3/4**, **SATA 3.0**, or **USB 3.1/3.2**. * **Current Rating:** Usually rated for **0.5A per pin** for signal pins, though specific power pins may handle more. * **Voltage Rating:** Typically **50V AC/DC**. * **Contact Resistance:** Low initial resistance (approx. 30mΩ - 50mΩ max) to minimize signal loss. * **Insulation Resistance:** 500MΩ minimum to prevent cross-talk between high-density pins. --- ### 3. Physical Construction 1. **Housing:** Made of High-Temperature Thermoplastic (LCP - Liquid Crystal Polymer) to withstand **Reflow Soldering** temperatures (up to 260°C). 2. **Contacts:** Copper alloy for high conductivity and flexibility. 3. **Shielding:** Often includes a metal "shell" or grounded tabs to provide EMI (Electromagnetic Interference) protection, crucial for high-frequency circuits. --- ### 4. Common Applications * **Internal Laptop Connections:** Connecting the mainboard to the I/O board (USB ports, Audio jacks). * **Mobile Devices:** Connecting LCD screens or camera modules to the logic board. * **Networking Gear:** Used in routers and switches for modular daughtercards. --- ### 5. Part Number Nomenclature (Typical) While naming conventions vary by manufacturer, the code usually breaks down as follows: * **M2AS:** Series designation (High-speed B2B). * **5444:** Physical configuration (Pin count and spacing). * **R2:** Revision 2 or specific packaging (Tape and Reel). ---