The **FJT-0A-R** is a specific electronic component belonging to the category of **Modular Jacks (RJ45)**. It is primarily used in networking equipment to provide a physical interface for Ethernet cables. --- ## 1. Technical Specifications Below are the typical technical parameters for the FJT-0A-R series: | Feature | Specification | | :--- | :--- | | **Connector Type** | RJ45 (8P8C) | | **Mounting Type** | Through-Hole (PCB Mount) | | **Orientation** | Right Angle (Horizontal) | | **Shielding** | Unshielded (Commonly) | | **Number of Ports** | 1 (Single Port) | | **Contact Plating** | Gold over Nickel | | **Housing Material** | Thermoplastic (UL 94V-0 Rated) | --- ## 2. Key Components & Construction The FJT-0A-R is composed of several critical electronic and mechanical parts: ### A. Contact Pins (The Interface) * **Material:** Usually Phosphor Bronze. * **Plating:** Gold plating is applied to the contact area to prevent oxidation and ensure low electrical resistance for data signals. * **Function:** Conducts electrical signals from the Ethernet cable (twisted pairs) to the PCB traces. ### B. Plastic Housing (Insulator) * **Material:** High-temperature engineering plastic. * **Function:** Provides structural integrity and ensures electrical isolation between the eight pins to prevent short circuits. ### C. Solder Tails * **Design:** These are the legs that extend through the PCB holes. * **Function:** Provides the mechanical bond and electrical connection to the circuit board via the soldering process. --- ## 3. Application Use Cases This component is found in various telecommunication and data devices, including: 1. **Network Switches/Routers:** Providing the LAN/WAN ports. 2. **Industrial Controllers:** Enabling Ethernet connectivity for PLC or IoT gateways. 3. **Computers:** Standard Ethernet port on motherboards or expansion cards. 4. **Embedded Systems:** For adding network capabilities to custom hardware. --- ## 4. Mechanical Drawing Overview When integrating this part, engineers focus on the **Footprint**: * **Pitch:** Typically 1.02mm between pins. * **Alignment:** Features "locating pegs" on the bottom to ensure the jack is perfectly aligned before soldering.