The **W2XR-4Z1Z1-R** is a specific part number typically associated with high-performance electronic interconnect solutions, often manufactured by companies like **Samtec**. This specific alphanumeric code identifies a high-speed, ruggedized cable assembly or connector interface. --- ### 1. Technical Specifications Overview Based on the standard nomenclature for this series, here is a breakdown of the electronic characteristics: | Feature | Specification Details | | :--- | :--- | | **Component Type** | High-speed Cable Assembly / Connector | | **Impedance** | 100 $\Omega$ (Differential) / 50 $\Omega$ (Single-ended) | | **Pin Configuration** | 4-Pair / 4-Position (Standardized) | | **Termination Style** | Z-Ray® or similar ultra-low profile compression | | **Signal Integrity** | Optimized for 28+ Gbps performance | | **Compliance** | RoHS Compliant | --- ### 2. Breakdown of the Part Number While nomenclature can vary slightly by manufacturer, the code generally follows this logic: * **W2XR**: Refers to the series family (e.g., Ultra-low profile, high-density compression arrays). * **4Z**: Indicates the number of positions or differential pairs available in the block. * **1Z1**: Specifies the wiring configuration, pinout mapping, or specific cable gauge (e.g., 34 AWG or 36 AWG Twinax). * **-R**: Denotes "Ruggedized" features or "Reel/Tape" packaging for automated assembly. --- ### 3. Key Electronic Characteristics #### A. Signal Integrity (SI) These parts are engineered to minimize **crosstalk** and **insertion loss**. They are used in environments where high-frequency signals must be transmitted across a PCB or between boards without significant degradation. #### B. Compression Technology Unlike standard pins, the "Z-Ray" or "W-series" often uses a compression-style contact. This allows for: 1. **Lower Profile:** Extremely thin stack heights. 2. **Reliability:** High cycle life and resistance to shock/vibration. 3. **Removability:** Easier to replace components without soldering. #### C. Materials * **Contact Base:** Beryllium Copper (BeCu) for superior conductivity and spring properties. * **Plating:** Typically Gold over Nickel to prevent oxidation and ensure low contact resistance. --- ### 4. Common Applications * **Data Centers:** High-speed server backplanes. * **Medical Imaging:** High-resolution data transmission in MRI or CT scan equipment. * **Military/Aerospace:** Radar systems and ruggedized computing modules. * **Testing Equipment:** High-bandwidth oscilloscopes and automated test equipment (ATE).