The **PTPH-84G-R** is a specific series of high-performance, shielded **RJ45 connectors** (specifically a Jack or Modular Socket) commonly manufactured by brands like *Pro-Signal* or *Pulse Electronics*. These are designed for high-speed Ethernet applications, particularly in industrial and networking hardware. --- ### ## Technical Specifications The electronic and physical characteristics of the PTPH-84G-R are outlined below: | Feature | Specification | | :--- | :--- | | **Connector Type** | RJ45 (8P8C) | | **Orientation** | Right Angle (Horizontal) | | **Mounting Type** | Through-Hole (PCB Mount) | | **Shielding** | Fully Shielded (Metal Housing) | | **Number of Ports** | 1 Port | | **LED Indicators** | Optional (Green/Yellow depending on sub-model) | | **Contact Plating** | Gold over Nickel | | **Data Rate Support** | 10/100/1000 Base-T (Gigabit Ethernet) | --- ### ### Key Electronic Components & Design #### 1. Integrated Magnetics (MagJack) Most parts in this series are "MagJacks." This means the connector is not just plastic and metal; it contains internal **transformers** and **common mode chokes**. * **Isolation:** Protects the PHY chip from high-voltage surges on the network cable. * **Noise Filtering:** Reduces Electromagnetic Interference (EMI) to ensure data integrity. #### 2. Shielding and Grounding The "G" in many variations refers to specific grounding tab configurations. The outer metal shell is designed to connect to the chassis ground, preventing the Ethernet cable from acting as an antenna for radio frequency interference. #### 3. Signal Integrity The internal pin layout is optimized to reduce **crosstalk** (interference between the four pairs of wires in a Cat5e/Cat6 cable). The gold plating on the contacts (usually 30µ" or 50µ") ensures a low-resistance connection and prevents oxidation over time. --- ### ### Typical Application Circuit When integrating the PTPH-84G-R into a PCB design, the pinout usually follows a standard Ethernet PHY interface: ```text [ Ethernet PHY Chip ] <---> [ PTPH-84G-R (Magnetics) ] <---> [ RJ45 Cable ] | [ Chassis Ground ] ``` * **TD+/- (Transmit):** Differential pairs for sending data. * **RD+/- (Receive):** Differential pairs for receiving data. * **Center Tap (CT):** Usually connected to a capacitor (Bob Smith Termination) to dissipate common-mode noise. ---