## Overview of M2SBS-C12-R The **M2SBS-C12-R** is a specific electronic hardware component, typically categorized as a **threaded standoff** or **spacer** used in PCB (Printed Circuit Board) assembly and electronic packaging. These parts are critical for maintaining mechanical integrity and ensuring proper electrical clearance between boards and chassis. --- ### Technical Specifications | Feature | Specification | | :--- | :--- | | **Thread Size** | M2 (Metric, 2mm diameter) | | **Gender Type** | Female-Female (Internal threads on both ends) | | **Material** | Stainless Steel (Commonly 303 or 304 grade) | | **Body Shape** | Hexagonal (Hex) | | **Across Flats (Width)** | 4.0 mm | | **Length (C-Value)** | 12.0 mm | | **RoHS Compliant** | Yes | --- ### Key Electronic & Mechanical Functions 1. **Electrical Isolation vs. Grounding**: * Since this part is made of **Stainless Steel**, it is electrically conductive. * It is often used to create a common ground between a PCB ground plane and a metal enclosure. * If isolation is required, nylon washers must be used in conjunction with this part. 2. **Structural Support**: * The "C12" indicates a 12mm length, which provides a fixed vertical clearance. This prevents short-circuiting that could occur if a PCB touches a metal housing. 3. **Heat Dissipation**: * Metal standoffs act as minor heat sinks, helping to conduct thermal energy away from the PCB and into the chassis. --- ### Part Number Breakdown Understanding the nomenclature helps in identifying variations: * **M2**: The metric thread diameter (2mm). * **SBS**: The series designation (typically referring to Stainless Steel Hex Standoffs). * **C12**: The length of the body (12mm). * **R**: Often denotes "RoHS Compliant" or a specific packaging/revision code depending on the manufacturer (such as *RAF Electronic Hardware* or *Mac8*). --- ### Application Example ```cpp // Context: Mounting an M.2 NVMe drive or small controller board // The M2SBS-C12-R provides the elevation. 1. Place M2SBS-C12-R on the chassis mounting hole. 2. Secure from underneath with an M2 screw. 3. Place the PCB on top of the standoff. 4. Secure the PCB with a second M2 screw into the top of the standoff. ```