The **M2REB-SD1-R2** is a specific industrial electronic component, typically categorized as a **Micro-SD Memory Card Connector**. These connectors are engineered for high reliability in embedded systems, automotive electronics, and industrial handheld devices. Below is a detailed breakdown of its technical and electronic specifications. --- ### 1. Key Technical Specifications The M2REB-SD1-R2 is designed to bridge the physical interface between a PCB (Printed Circuit Board) and a Micro-SD flash memory card. | Parameter | Specification | | :--- | :--- | | **Component Type** | Micro-SD Card Slot / Connector | | **Mounting Type** | Surface Mount (SMT) | | **Eject Mechanism** | Push-Push (Push to insert, Push to eject) | | **Number of Positions** | 8 Pins + 1 Switch (Card Detection) | | **Pitch** | 1.10 mm | | **Orientation** | Right Angle / Horizontal | --- ### 2. Electronic Characteristics From an electrical engineering perspective, the performance of this connector is defined by its conductivity and signal integrity: * **Current Rating:** Typically 0.5A per terminal. * **Voltage Rating:** Up to 100V AC/DC. * **Contact Resistance:** Max 100mΩ (Initial). This ensures minimal signal loss during high-speed data transfers (SDHC/SDXC). * **Insulation Resistance:** Min 1000MΩ at 500V DC, preventing crosstalk between the high-speed data pins. * **Card Detection Switch:** Includes a dedicated "Normally Open" or "Normally Closed" switch pin to signal the MCU/Processor when a card is physically present. --- ### 3. Material Composition The materials are chosen for durability and thermal stability during the soldering process. 1. **Housing:** High-temperature thermoplastic (LCP - Liquid Crystal Polymer), capable of withstanding **Reflow Soldering** temperatures (up to 260°C). 2. **Contacts:** Copper Alloy with **Gold Plating** on the contact area to prevent oxidation and ensure long-term connectivity. 3. **Shell:** Stainless steel or Nickel-plated alloy for EMI (Electromagnetic Interference) shielding and structural rigidity. --- ### 4. Mechanical Design Features * **Push-Push Mechanism:** Ideal for consumer electronics where the user needs an intuitive way to swap cards without using tools or tweezers. * **Anti-Card-Fly-Out:** Integrated braking features to prevent the card from being ejected too forcefully. * **Shielding Tabs:** The metal shell is soldered to the PCB ground plane to reduce electronic noise. --- ### 5. Typical Applications * **IoT Gateways:** For local data logging. * **Automotive Dashcams:** High-vibration environments requiring secure card retention. * **Industrial HMIs:** Interface panels for machine control. * **Handheld Scanners:** Rugged mobile devices.