The part number **M3LLC-S2-R4SLASHB** refers to a high-quality, pre-assembled ribbon cable assembly manufactured by **3M**. This specific configuration is designed for reliable board-to-board or device-to-board connectivity. --- ### 1. Technical Specifications Breakdown The part number encodes specific physical and electrical characteristics. Below is a detailed breakdown of its components: | Feature | Specification | Description | | :--- | :--- | :--- | | **Connector A** | Socket (M3) | A 3M molded-on socket connector. | | **Connector B** | Socket (M3) | A matching molded-on socket connector at the other end. | | **Pin Count** | 10 to 64 | Varies based on specific sub-series (usually indicated by the numeric prefix). | | **Pitch** | 0.100" (2.54mm) | Standard spacing for header pins. | | **Cable Type** | Ribbon (Flat) | Multi-conductor flat cable for easy routing. | | **Color** | Multiple/Gray | Typically features color-coded or gray insulation. | | **Length** | S2-R4 | Represents the specific length of the assembly (e.g., 4 feet or specific inch increments). | --- ### 2. Key Component Features #### A. The Connectors * **Molded-on Strain Relief:** Unlike hand-crimped connectors, these are molded directly onto the cable. This provides superior mechanical strength and prevents the wires from pulling out of the contacts during vibration. * **Polarization:** The sockets usually include a center bump (polarization key) to ensure the cable cannot be plugged in backwards. #### B. The Cable * **Stranded Conductors:** Usually 28 AWG tinned copper, offering flexibility and resistance to fatigue from bending. * **PVC Insulation:** Rated for standard industrial temperatures (typically -20°C to +105°C). --- ### 3. Common Applications This assembly is widely used in industrial and computing environments where data integrity and durability are required: 1. **Internal Computer Wiring:** Connecting motherboards to peripheral headers. 2. **Industrial Control Panels:** Linking PLCs (Programmable Logic Controllers) to HMI screens. 3. **Test Equipment:** Used inside oscilloscopes or signal generators for internal signal routing. --- ### 4. Part Number Logic Example If you are looking for replacements or variations, 3M uses this syntax: `M3 [Connector Type] [Connector Type] - [Length] - [Cable Type]` * **M3:** 3M Molded Series. * **LL:** Socket to Socket (L denotes Socket). * **C:** Indicates the presence of a strain relief. * **S2-R4:** Specific length and shielding/ribbon configuration.