The **M2REB-S3D-R** is a specific part number typically associated with high-density, multi-pin electrical connectors, often used in telecommunications, industrial control systems, and PCB-to-cable interfaces. --- ### 1. Technical Specifications Below is a breakdown of the typical characteristics for this series of electronic components: | Feature | Specification | | :--- | :--- | | **Component Type** | Rectangular Connector / IDC Socket | | **Number of Positions** | 20 to 50 Pins (Series dependent) | | **Pitch** | 2.54mm (0.1 inch) or 2.0mm | | **Mounting Type** | Free Hanging (In-Line) or Panel Mount | | **Contact Finish** | Gold or Tin Plating | | **Termination** | IDC (Insulation Displacement Connector) | --- ### 2. Key Component Parts The "M2REB" designation refers to the construction assembly: * **The Housing:** Usually made of PBT (Polybutylene Terephthalate) or similar glass-filled thermoplastic. It is UL94V-0 rated for flame retardancy. * **The Contacts:** Phosphor bronze or copper alloy pins. These are designed to pierce the insulation of ribbon cables to create a gas-tight connection without stripping the wires. * **Strain Relief (The "-R" Suffix):** The "R" usually indicates the inclusion of a **Strain Relief** clip. This plastic piece snaps over the ribbon cable to prevent the wires from being pulled out of the IDC contacts during manual handling. * **Polarization Slot:** A central bump or slot that ensures the connector can only be plugged in one way, preventing reverse polarity. --- ### 3. Applications These parts are commonly found in the following electronic environments: 1. **Internal Data Bus:** Connecting a motherboard to a peripheral (like older IDE drives or sensor arrays). 2. **PLC Modules:** Used in Programmable Logic Controllers for industrial automation. 3. **Test Equipment:** Providing a stable interface for diagnostic ribbon cables. --- ### 4. Wiring Diagram Logic When working with these parts, the pinout follows a standard zigzag pattern: ```text Row A: 1 3 5 7 9 ... | | | | | Row B: 2 4 6 8 10 ... ```