The **47LM-140G-R** is a specific model identifier typically associated with high-performance **Magnetic components**, specifically an **RJ45 Connector with Integrated Magnetics** (also known as a MagJack). These are commonly used in Ethernet networking interfaces. --- ### Technical Specifications The following table outlines the typical technical parameters for this class of component: | Feature | Specification | | :--- | :--- | | **Component Type** | RJ45 Modular Jack with Internal Magnetics | | **Speed/Protocol** | 10/100/1000 Base-T (Gigabit Ethernet) | | **Configuration** | Single Port (1x1), Tab-Up | | **LED Options** | Green/Yellow (Depending on specific suffix) | | **Mounting Type** | Through-Hole (THT) / Right Angle | | **Operating Temp** | -40°C to +85°C (Industrial Grade) | | **Isolation Voltage** | 1500 Vrms | --- ### Key Electronic Functions The "Magnetics" inside this part serve four primary electronic purposes: 1. **Isolation:** It provides galvanic isolation between the PHY (Physical Layer) chip and the Ethernet cable, protecting the device from high-voltage transients or ground loops. 2. **Impedance Matching:** Ensures the 100-ohm differential impedance of the twisted-pair cable matches the transceiver requirements. 3. **EMI Suppression:** Integrated common-mode chokes filter out electromagnetic interference (EMI) to meet FCC/CE radiation standards. 4. **Signal Conditioning:** It maintains signal integrity over long cable runs (up to 100 meters) by reducing noise. --- ### Pinout and Connection Schematic A typical internal circuit for a Gigabit-capable RJ45 part includes: ```text Cable Side (RJ45) Internal Magnetics PCB Side (PHY) [Pin 1] TX+ ----------[ Transformer ]---------- [TD1+] [Pin 2] TX- ----------[ Transformer ]---------- [TD1-] [Pin 3] RX+ ----------[ Transformer ]---------- [TD2+] [Pin 6] RX- ----------[ Transformer ]---------- [TD2-] ... (Repeated for all 4 pairs in Gigabit) ... ----------[ Common Mode Choke ]---- [Ground] ``` ### Common Applications * **Networking Hardware:** Routers, switches, and hubs. * **Industrial PC:** Motherboards and embedded systems. * **IoT Gateways:** Devices requiring wired internet connectivity. * **Set-top Boxes:** High-speed data streaming interfaces. ---