The **MH11FAG-R** is an electronic component primarily classified as a **Modular Jack (RJ45)** connector. It is specifically designed for networking applications, integrating magnetics (transformers) directly into the connector housing to save PCB space and improve EMI shielding. --- ### Technical Specifications and Features | Category | Specification Details | | :--- | :--- | | **Component Type** | RJ45 Modular Jack with Integrated Magnetics (MagJack) | | **Ports** | Single Port (1x1) | | **Speed/Bandwidth** | 10/100 Base-T (Fast Ethernet) | | **Mounting Type** | Through-Hole (THT), Right Angle | | **LED Configuration** | Typically dual LEDs (e.g., Green/Yellow) for status indication | | **Shielding** | Metal shield with EMI tabs for grounding | | **Operating Temp** | -40°C to +85°C (Standard Industrial Range) | --- ### Key Internal Electronic Parts The "MagJack" nature of the MH11FAG-R means it contains several internal components hidden inside the plastic and metal housing: 1. **Isolation Transformers:** Provides 1500Vrms isolation between the Ethernet cable and the PHY (Physical Layer) chip to protect the device from voltage surges. 2. **Common Mode Chokes:** Filters out electromagnetic interference (EMI) and noise from the data lines. 3. **Bob Smith Termination:** A resistor/capacitor network used to reduce common-mode emissions and terminate unused wire pairs. 4. **Integrated LEDs:** Surface-mount or leaded LEDs inside the housing to indicate "Link" and "Activity" status. ### Typical Pinout Configuration | Pin Number | Function (Typical) | Description | | :--- | :--- | :--- | | **1** | TX+ | Transmit Data Positive | | **2** | TX- | Transmit Data Negative | | **3** | RX+ | Receive Data Positive | | **4** | NC / Termination | Center Tap / 75 Ohm Resistor | | **5** | NC / Termination | Center Tap / 75 Ohm Resistor | | **6** | RX- | Receive Data Negative | | **7** | NC / Termination | Center Tap / 75 Ohm Resistor | | **8** | NC / Termination | Center Tap / 75 Ohm Resistor | --- ### Application Usage The MH11FAG-R is commonly found in: * **Embedded Systems:** Single-board computers (SBCs) and IoT gateways. * **Industrial Automation:** PLCs and industrial Ethernet switches. * **Networking Gear:** Routers, modems, and network interface cards (NICs).