The **M2AMS2-A11-R** is a specific part number typically associated with high-performance **M.2 (NGFF) connectors**, often manufactured by companies like **LOTES** or distributed for use in motherboards, laptops, and embedded systems. This component serves as the physical and electrical interface between the system board and an M.2 expansion card (such as an NVMe SSD or a Wi-Fi module). --- ### 1. Key Technical Specifications The part number breaks down into specific physical and electrical characteristics: | Feature | Specification | | :--- | :--- | | **Connector Type** | M.2 (Next Generation Form Factor / NGFF) | | **Keying** | Typically **M-Key** (Common for PCIe x4 NVMe SSDs) | | **Mounting Type** | Surface Mount (SMT) | | **Orientation** | Right Angle / Horizontal | | **Height** | Usually 3.2mm or 4.2mm (Depending on the specific sub-series) | | **Pitch** | 0.50 mm | | **Pin Count** | 67-Pin (Standard for M.2) | --- ### 2. Major Electronic Components & Materials The reliability of this part depends on its material composition: * **Housing:** High-temperature Thermoplastic (UL94V-0 rated). This allows the part to withstand the heat of **Reflow Soldering** during PCB assembly. * **Contacts:** Copper Alloy. This provides high conductivity and flexibility for the spring-loaded pins. * **Plating:** * **Contact Area:** Gold plating (often 15u" or 30u") to prevent oxidation and ensure low signal resistance over time. * **Solder Tails:** Matte Tin or Gold Flash to ensure easy soldering to the PCB. * **Shell/Shielding:** Some variants include metallic "Solder Tabs" on the sides to provide mechanical grounding and structural integrity against vibration. --- ### 3. Electrical & Signal Integrity Because the M2AMS2 series is designed for high-speed data transfer (PCIe Gen 3, Gen 4, and sometimes Gen 5), its electronic design focuses on: 1. **Impedance Control:** Maintained at **100 Ohms** (differential) to match PCIe trace standards, preventing signal reflections. 2. **Current Rating:** Typically **0.5A per pin**. 3. **Voltage Rating:** **50V AC/DC**. 4. **Low Contact Resistance:** Usually restricted to **55mΩ maximum** to prevent voltage drops and heat buildup. --- ### 4. Application Context The "R" in the suffix often denotes **Tape & Reel** packaging, indicating that this part is intended for automated SMT (Surface Mount Technology) assembly lines. * **Usage:** Used in server blades, high-end consumer laptops (like ASUS or MSI boards), and NUC-sized industrial PCs. * **Compatibility:** Designed to host M.2 cards in 2242, 2260, 2280, or 22110 form factors. ---