The part number **M3SWVS-DAY-R** refers to a high-quality ribbon cable assembly manufactured by **3M**. This specific component is designed for internal board-to-board or peripheral connections where space is limited and reliability is critical. --- ### 1. Technical Specifications The following table breaks down the core physical and electrical characteristics of the assembly: | Feature | Specification | | :--- | :--- | | **Manufacturer** | 3M | | **Connector Type** | Socket to Card Edge | | **Number of Positions** | 34 Positions | | **Pitch (Connector)** | 0.100" (2.54mm) | | **Pitch (Cable)** | 0.050" (1.27mm) | | **Length** | 0.833' (254.00mm / 10.00") | | **Color** | Gray, Ribbon | | **Shielding** | Unshielded | | **Termination Style** | IDC (Insulation Displacement Connector) | --- ### 2. Component Breakdown #### A. Connector A: Socket (Mating) The assembly features a **34-position socket**. This is a female connector designed to plug into standard 0.1" pitch headers (male pins). It typically includes a center bump (polarization key) to ensure it cannot be plugged in backward. #### B. Connector B: Card Edge The other end features a **Card Edge connector**. Unlike a standard pin header, this slides onto the edge of a Printed Circuit Board (PCB) that has gold-plated "fingers" or pads. This is a classic method for connecting peripheral cards or expansion modules. #### C. The Cable (Ribbon) The cable uses 3M's standard **PVC gray ribbon**. Because the cable pitch is 0.050" but the connector pitch is 0.100", the wires are staggered within the IDC connector to transition between the high-density cable and the standard-density header. --- ### 3. Common Applications * **Legacy Computing:** Connecting floppy drives or older hard drive controllers to motherboards. * **Industrial Control:** Linking a main control board to a backplane or an I/O expansion card. * **Testing Equipment:** Providing a removable interface between a test fixture and a Device Under Test (DUT). * **Prototyping:** Used with development boards that utilize standard 2.54mm headers. --- ### 4. Key Advantages 1. **Reliability:** 3M is known for high-quality IDC terminations that resist gas permeation and corrosion. 2. **Strain Relief:** These assemblies usually come with pre-installed strain relief clips to prevent the ribbon cable from tearing away from the connector during vibration or handling. 3. **Gold Plating:** The contact areas are typically plated with gold over nickel to ensure low contact resistance and long lifecycle.