The **AISC-402-R15G-T** is an industrial-grade networking component, specifically a **10/100/1000 Base-T Single Port Magnetic Module** (often referred to as an RJ45 Transformer or Discrete Magnetic). These parts are critical for Ethernet interfaces to provide signal conditioning, impedance matching, and high-voltage isolation. --- ### 1. Key Technical Specifications The following table outlines the core electronic characteristics of the AISC-402-R15G-T: | Parameter | Specification | | :--- | :--- | | **Type** | Ethernet Magnetic Transformer | | **Speed** | 10/100/1000 Base-T (Gigabit Ethernet) | | **Port Count** | Single Port (1x1) | | **Isolation Voltage** | 1500 Vrms (Minimum) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Package** | Surface Mount (SMD) | | **Turns Ratio** | 1:1 (Transmitter & Receiver) | --- ### 2. Electronic Functions The AISC-402-R15G-T serves three primary roles in a circuit: 1. **Isolation:** It provides galvanic isolation between the PHY (Physical Layer) chip and the external network cable. This protects sensitive electronics from static discharge (ESD) or surges on the Ethernet line. 2. **Impedance Matching:** It ensures that the differential signals from the PHY chip match the 100-ohm impedance of the twisted-pair Category 5/6 cabling, minimizing signal reflection. 3. **Common Mode Rejection:** It filters out electromagnetic interference (EMI) and noise using internal common-mode chokes, ensuring data integrity over long cable runs. --- ### 3. Application Circuitry In a typical PCB layout, this part is placed between the **Ethernet PHY chip** and the **RJ45 Connector**. * **PHY Side:** Connects to differential pairs (TX+/-, RX+/-). * **Line Side:** Connects to the pins of the RJ45 jack. * **Center Taps:** Usually connected to a "Bob Smith" termination (resistor/capacitor network to ground) to further reduce EMI. --- ### 4. Part Number Breakdown While naming conventions vary by manufacturer, the "R15G-T" typically denotes: * **R:** RoHS Compliant. * **15:** Refers to the isolation rating (1.5kV). * **G:** Gigabit (1000 Base-T) capability. * **T:** Tape and Reel packaging for automated assembly.