The **M2SES-2BA-R2** is a specialized electronic component primarily categorized as an **M.2 (NGFF) connector** designed for high-speed data transmission and compact hardware integration. It is commonly manufactured by companies like **LOTES** or used as an industrial standard part in embedded systems. ### 1. Key Technical Specifications The following table outlines the core electronic and physical characteristics of the M2SES-2BA-R2: | Parameter | Specification | | :--- | :--- | | **Connector Type** | M.2 (Next Generation Form Factor - NGFF) | | **Keying** | B-Key (typically) | | **Pitch** | 0.50 mm | | **Mounting Type** | Surface Mount (SMT) / Right Angle | | **Contact Plating** | Gold over Nickel | | **Height** | 2.25mm to 4.2mm (varies by specific sub-revision) | | **Number of Positions** | 75 Pins | --- ### 2. Functional Electronic Components The "parts" or functional zones of this connector include: #### A. Signal Pins (Gold-Plated Contacts) * **Purpose:** These are the primary conduits for electrical signals. * **Material:** Phosphor Bronze with gold plating to ensure low contact resistance and prevent oxidation over long periods. * **Mapping:** Supports high-speed interfaces such as **SATA 3.0**, **USB 3.0**, and **PCIe x2**. #### B. The Housing (Insulator) * **Material:** High-temperature thermoplastic (usually LCP - Liquid Crystal Polymer). * **Role:** Ensures electrical isolation between the 75 pins and maintains structural integrity during the reflow soldering process (capable of withstanding ~260°C). #### C. Solder Tabs (Hold-downs) * **Purpose:** These are metal tabs on the sides of the connector. * **Role:** They provide mechanical stability when soldered to the PCB, ensuring that the connector does not lift off the board during the insertion or removal of an M.2 module. #### D. Keying Notch * **Electronic Logic:** The "B-Key" physical notch prevents the user from inserting incompatible modules (like an M-Key NVMe drive) that require different voltage rails or signal mapping, protecting the circuitry from short circuits. --- ### 3. Application Use Cases This specific connector is used to interface various modules with a motherboard or carrier board: 1. **WWAN Modules:** 4G LTE or 5G modems. 2. **SSD Storage:** SATA-based M.2 solid-state drives. 3. **GNSS/GPS:** Satellite positioning modules in industrial computers. ---