The **RG2-111S-R15** is a high-performance **RJ45 Connector with Integrated Magnetics** (also known as a "MagJack"). It is commonly used in networking hardware to provide physical connectivity for Ethernet cables while handling signal conditioning and isolation. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Component Type** | RJ45 Connector (MagJack) | | **Data Rate** | 10/100 Base-TX (Fast Ethernet) | | **Port Configuration** | Single Port (1x1), Tab-Down | | **LED Configuration** | Typically Green/Yellow (Bi-color or dual options) | | **Mounting Type** | Through-Hole (THT) | | **Shielding** | EMI Shielded with EMI Tabs | | **Isolation Voltage** | 1,500 Vrms | --- ### 2. Internal Electronic Components The "Integrated Magnetics" means this part is not just a plastic jack; it contains several discrete electronic components inside the metal housing: * **Isolation Transformers:** Protects the circuitry from high-voltage surges on the network line and provides galvanic isolation. * **Common Mode Chokes:** Used to suppress Electromagnetic Interference (EMI) and noise, ensuring signal integrity over long cable lengths. * **Termination Resistors:** Typically 75-ohm resistors (Bob Smith Termination) are included to reduce reflections and improve impedance matching. * **High-Voltage Capacitors:** Usually rated for 2kV, these decouple the chassis ground from the signal ground. --- ### 3. Physical Features & Design * **EMI Tabs:** The metal "fingers" on the top and sides of the shield ensure a solid electrical connection to the chassis/panel, reducing interference. * **Tab Direction:** This is a "Tab-Down" model, meaning the release clip of the RJ45 cable faces the PCB. * **Gold Plating:** The contact pins are typically plated with 15µ" to 50µ" of gold to prevent oxidation and ensure reliable data transmission over time. --- ### 4. Typical Application Circuit When integrating the RG2-111S-R15, the electronics are connected as follows: ```mermaid graph LR PHY_Chip[Ethernet PHY] --- RG2[RG2-111S-R15] RG2 --- RJ45_Cable[Cat5e/6 Cable] subgraph Inside_RG2 T[Transformer] C[Choke] R[Termination] end ``` ---