The part number **48SV2-RVZST-R** refers to a high-performance **Micro-SD Express Connector** or specialized memory card interface (often associated with manufacturers like JAE or similar precision connector suppliers). These parts are designed to bridge the gap between traditional SD storage and high-speed PCIe/NVMe data transfer protocols. --- ### 1. Technical Specifications Below is a breakdown of the typical electronic and mechanical characteristics for this series: | Feature | Specification | | :--- | :--- | | **Card Type** | Micro-SD (TransFlash) / Micro-SD Express | | **Mounting Type** | Surface Mount (SMT), Right Angle | | **Eject Mechanism** | Push-Push (Click-in, Click-out) | | **Data Protocol** | PCIe Gen3 x1 / NVMe (Compatible with UHS-I) | | **Operating Voltage** | 3.3V / 1.8V (Dual Voltage Support) | | **Durability** | ~5,000 Mating Cycles | | **Packaging** | Tape & Reel (indicated by the "-R" suffix) | --- ### 2. Key Internal Components The connector is composed of several critical electronic and structural elements: 1. **Contact Terminals:** * **Material:** Copper alloy with Gold plating over Nickel. * **Function:** Ensures low contact resistance and high signal integrity for high-speed PCIe lanes. 2. **Card Detection Switch:** * An internal mechanical switch that closes/opens when a card is inserted, sending a signal to the processor to initialize the storage. 3. **Shielding Shell:** * Stainless steel or metal alloy frame used for EMI/RFI protection, preventing interference with nearby Wi-Fi or Bluetooth antennas. 4. **Hold-downs (Solder Tabs):** * Metal tabs on the sides that provide mechanical strength to prevent the connector from being ripped off the PCB during card insertion. --- ### 3. Pinout & Connectivity Logic The "Express" variant uses a dual-row contact system: * **Legacy Row:** Maintains backward compatibility with standard Micro-SD speeds (UHS-I). * **Express Row:** Adds additional pins to support the **PCIe interface** and **NVMe** protocol, allowing for speeds up to 985 MB/s. --- ### 4. Application Use Cases * **High-End Smartphones:** For expandable storage that requires SSD-like speeds. * **Action Cameras/Drones:** Capturing 4K/8K video streams that exceed standard SD card write speeds. * **IoT Gateways:** Where high-speed data logging and reliability are required. * **Automotive Infotainment:** Handling large map databases and media streaming.