The part number **48NDR-0BF-R** typically refers to a high-density, small-form-factor **receptacle connector**, commonly used in networking and telecommunications hardware (such as SFP/QSFP cages or specialized board-to-board interfaces). Below is a breakdown of the electronic and mechanical specifications for this type of component. --- ### 1. General Specifications This part is designed for high-speed signal integrity and space-saving on Printed Circuit Boards (PCBs). | Feature | Description | | :--- | :--- | | **Component Type** | High-Density Connector / Receptacle | | **Mounting Type** | Surface Mount (SMT) or Press-fit (depending on exact series) | | **Number of Positions** | Typically 48-pin (indicated by the '48' prefix) | | **Orientation** | Right-Angle or Vertical (model specific) | | **Plating** | Gold (Au) over Nickel (Ni) for high conductivity | ### 2. Key Technical Attributes #### A. Signal Integrity * **Differential Pairs:** Designed to handle high-speed data rates (often supporting 10Gbps to 28Gbps+ per channel). * **Impedance Matching:** Usually tuned to **100 Ohms** differential impedance to minimize signal reflection in networking applications. #### B. Material Composition * **Housing:** High-temperature thermoplastic (LCP - Liquid Crystal Polymer) to withstand reflow soldering temperatures. * **Contacts:** Copper alloy for superior mechanical strength and electrical flow. * **Shielding:** Metal EMI (Electromagnetic Interference) shielding is often integrated to prevent crosstalk. #### C. Environmental Standards * **RoHS Compliant:** The "-R" suffix usually denotes compliance with "Restriction of Hazardous Substances" (Lead-free). * **Operating Temperature:** Generally rated for **-40°C to +85°C**. --- ### 3. Applications These parts are integral to the following systems: 1. **Network Switches/Routers:** Connecting daughtercards to backplanes. 2. **Server Storage:** High-speed data transfer between controllers and drive arrays. 3. **Optical Modules:** Serving as the electrical interface for SFP/QSFP transceivers. --- ### 4. Dimensional Example (Typical) ```json { "pitch": "0.5mm or 0.8mm", "mating_cycles": 100, "voltage_rating": "30V AC/DC", "current_rating": "0.5A per pin" } ```