The **M2SBS-211-R** is a specific part number belonging to the **M2SBS series** of board-to-board connectors, typically manufactured by companies like **Mac8**. These components are specialized hardware used primarily in high-density electronic assemblies to connect two printed circuit boards (PCBs) while maintaining a precise distance. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its physical and electrical characteristics. | Feature | Specification | | :--- | :--- | | **Component Type** | Spacing Pin / Board-to-Board Spacer | | **Material** | Brass (usually with Gold or Tin plating) | | **Gender** | Male (Pin) | | **Mounting Type** | Surface Mount (SMT) or Through-Hole (depending on specific suffix) | | **Pitch** | Typically 2.0mm or 2.54mm (standard for M2 series) | | **RoHS Compliant** | Yes (indicated by the -R suffix) | --- ### 2. Physical Design and Function The "M2" in the part number often refers to the **M2 thread size** or a specific series designation for miniature electronics. * **Internal Threading:** These parts often feature internal threads to allow for a screw to secure the top board or a casing. * **Automatic Mounting:** The "SBS" series is designed for automated assembly. They are often supplied in **Tape and Reel** packaging so that pick-and-place machines can mount them onto the PCB just like a resistor or capacitor. * **Electrical Conductivity:** Unlike plastic spacers, the M2SBS-211-R is metallic. This allows it to serve as a **grounding point** or a high-current path between two stacked PCBs. --- ### 3. Application Use Cases This part is commonly found in compact electronic devices where vertical space is limited. 1. **PCB Stacking:** Rigidly connecting a daughterboard to a motherboard. 2. **Heat Dissipation:** Acting as a thermal bridge between a component and a metal chassis. 3. **EMI Shielding:** Connecting a shielding can to the PCB ground plane. 4. **Power Delivery:** Transferring low-voltage power between stacked layers without using a ribbon cable. --- ### 4. Key Advantages * **Precision:** Ensures the gap between boards is uniform across the entire production run. * **Solderability:** The plating is optimized for reflow soldering, ensuring a strong mechanical bond to the PCB pad. * **Space Saving:** Eliminates the need for bulky plastic standoffs and manual nut/bolt assembly.