The **M3SXT-1Z1-R** is a high-quality, pre-assembled IDC (Insulation Displacement Connector) ribbon cable assembly manufactured by **3M**. It is designed for reliable, high-density electronic connections between printed circuit boards (PCBs) or internal components. --- ### 1. Part Number Breakdown The part number follows a specific nomenclature used by 3M for their molded or assembled cable lines: | Component Code | Description | | :--- | :--- | | **M3** | Series designation (often related to the connector type or 3M family). | | **SXT** | Indicates the connector type (Socket) and strain relief configuration. | | **1Z1** | Specifics regarding the number of positions and pinning configuration. | | **R** | Indicates compliance with **RoHS** (Restriction of Hazardous Substances) standards. | --- ### 2. Technical Specifications The core electronic and physical attributes of this assembly include: * **Connector Type:** Socket to Socket (Female to Female). * **Pitch (Spacing):** Typically **0.100" (2.54mm)**, which is the standard size for most breadboards and PCB headers. * **Number of Positions:** Usually indicates a 10-position (or similar depending on specific lot) configuration. * **Cable Type:** Flat Ribbon Cable, Gray (usually 28 AWG). * **Shielding:** Unshielded (standard for internal logic signals). * **Length:** This specific assembly usually comes in a fixed length (often 12 inches/305mm, but varies by sub-ordering code). --- ### 3. Key Electronic Components #### A. The Connectors The ends feature **IDC Sockets**. Unlike crimp or solder connectors, IDC connectors pierce the insulation of the ribbon cable to make contact with the conductor, ensuring a gas-tight connection that is highly resistant to vibration. #### B. Polarizing Key The assembly includes a center polarization "bump" or key. This is a critical electronic safety feature that prevents the cable from being plugged in backwards, which would reverse the power and ground pins and potentially destroy the circuitry. #### C. Strain Relief The "SXT" designation indicates the presence of a **Strain Relief clip**. This is a plastic bar that loops the cable back over the connector. It ensures that if the cable is pulled, the tension is placed on the plastic housing rather than the delicate electrical metal-to-wire contact points. --- ### 4. Common Applications * **Internal Data Bus:** Connecting a motherboard to a peripheral. * **Programming Headers:** Connecting an ISP or JTAG programmer to a microcontroller. * **Industrial Controls:** Linking PLC modules or display panels to control boards.