The **M5RJ84UPJ-R** is a specific electronic component belonging to the **RJ45 Modular Jack** family. It is primarily used in networking hardware to provide physical connectivity for Ethernet cables. Below is a detailed breakdown of its electronic and mechanical specifications. --- ## 1. Technical Specifications The "M5R" series typically refers to high-performance modular jacks often used in industrial or telecommunications equipment. | Feature | Specification | | :--- | :--- | | **Connector Type** | RJ45 (8P8C - 8 Positions, 8 Contacts) | | **Mounting Type** | Through-Hole (PCB Mount) | | **Orientation** | Right Angle (Side Entry) | | **Shielding** | Shielded (Metal Shell for EMI/RFI protection) | | **LED Configuration** | Typically Dual LED (usually Green/Yellow or Green/Orange) | | **Tab Direction** | Tab Up (U) | | **Performance Category** | Cat5e or Cat6 (depending on internal magnetics) | --- ## 2. Key Electronic Components ### A. Integrated Magnetics (MagJack) Most components with this naming convention are **MagJacks**. This means the RJ45 housing contains internal circuitry: * **Isolation Transformers:** Protects the equipment from high-voltage surges on the network line. * **Common Mode Chokes:** Filters out electromagnetic interference (EMI) to ensure signal integrity. * **Termination Resistors:** Matches impedance to prevent signal reflection. ### B. Shielding and Grounding The "R" suffix often denotes a shielded version with **EMI Fingers**. The metal outer shell is connected to the PCB ground via solder tabs, preventing external noise from affecting the data stream. ### C. LED Indicators The integrated LEDs are connected to the PCB via separate pins. They provide real-time status updates: * **Link Status:** Indicates a successful connection to another device. * **Activity:** Flashes during data transmission/reception. --- ## 3. Physical Layout (Footprint) The component typically follows a standard pitch for networking jacks: * **Signal Pins:** 1.02mm pitch. * **Housing Material:** High-temperature thermoplastic (UL 94V-0 rated). * **Contact Plating:** Gold plating (often 30µ" or 50µ") over Nickel to prevent oxidation and ensure long-term conductivity. --- ## 4. Common Applications * **Networking Gear:** Switches, routers, and hubs. * **Industrial PC:** Embedded motherboards and PLC controllers. * **Telecom:** Modems and VoIP gateways.