The **WJT-N4B-R** is a specific electronic component, typically categorized as a **modular jack** or **RJ45 connector**. These are commonly used in networking hardware like routers, switches, and industrial controllers. --- ### 1. Technical Specifications The "WJT" series generally refers to high-performance registered jacks. Below are the typical technical characteristics associated with this part number: | Feature | Specification | | :--- | :--- | | **Connector Type** | RJ45 (8P8C) | | **Orientation** | Right Angle (Horizontal) | | **Shielding** | Shielded (Metal Housing) | | **LED Indicators** | Often dual LEDs (Green/Yellow) | | **Mounting Type** | Through-hole (PCB Mount) | | **Performance** | Usually supports Cat5e or Cat6 speeds | --- ### 2. Key Components & Construction The WJT-N4B-R is comprised of several critical sub-parts that ensure signal integrity: * **Housing:** Made of high-temperature thermoplastic (UL94V-0 rated) to withstand soldering processes. * **Shielding:** A copper alloy shell plated with nickel to prevent Electromagnetic Interference (EMI) and Radio Frequency Interference (RFI). * **Contacts:** Phosphor bronze base material with **Gold Plating** on the contact area. Gold is used to prevent corrosion and ensure low contact resistance over time. * **Integrated Magnetics (Optional):** Many "WJT" series connectors include internal transformers (MagJack) to provide signal conditioning and high-voltage isolation. --- ### 3. Pinout and Internal Layout The "N4B" designation often refers to the specific physical footprint and LED configuration: 1. **Mechanical Tabs:** Side or top tabs that lock the connector into the chassis. 2. **Solder Pins:** Arranged in a staggered grid to ensure stability on the PCB. 3. **LED Terminals:** Separate pins at the rear of the connector to drive the status lights. --- ### 4. Common Applications Due to its robust shielding and compact right-angle design, it is frequently found in: * **Industrial PCs:** Where vibration and noise immunity are required. * **Telecommunications:** Servers and network hubs. * **Embedded Systems:** Microcontroller boards (like those using ESP32 or STM32) requiring Ethernet connectivity.