The **FJT-8A-R** is a specific electronic component, typically categorized as a **Surface Mount (SMT) Low Profile Jack** or a **Shielded Modular Connector** (often used in telecommunications or networking equipment). Below is a detailed breakdown of its technical specifications and physical characteristics. --- ### 1. General Specifications The FJT series generally refers to modular connectors (similar to RJ45 or RJ11 styles) designed for high-density PCB mounting. | Feature | Specification | | :--- | :--- | | **Component Type** | Modular Jack / Connector | | **Mounting Type** | SMT (Surface Mount Technology) | | **Shielding** | Fully Shielded (Metal Housing) | | **Orientation** | Right Angle / Side Entry | | **Contact Plating** | Gold over Nickel | ### 2. Key Electronic Components & Materials To understand how the FJT-8A-R functions, it is essential to look at its internal construction: * **Housing:** Usually made of high-temperature thermoplastic (LCP - Liquid Crystal Polymer) to withstand reflow soldering temperatures. * **Shielding:** A copper alloy or stainless steel shell that provides EMI (Electromagnetic Interference) protection and grounding. * **Contacts:** Phosphor bronze base material for flexibility and conductivity, plated with gold to prevent oxidation and ensure low contact resistance. ### 3. Pin Configuration & Applications The "8A" in the part number usually indicates an **8-position** configuration. * **Positions/Contacts:** 8P8C (8 Positions, 8 Contacts). * **Common Uses:** * Ethernet connections (LAN). * High-speed data transmission in telecommunications. * Compact consumer electronics where vertical space is limited. * **Mechanical Strength:** Includes "solder tabs" or "pegs" on the shield to provide mechanical stability on the PCB, preventing the connector from being ripped off during cable insertion/removal. ### 4. Typical Electrical Ratings While specific manufacturer datasheets may vary slightly, standard ratings for this class of connector are: | Parameter | Typical Value | | :--- | :--- | | **Voltage Rating** | 125V AC/DC | | **Current Rating** | 1.5 Amps | | **Contact Resistance** | < 30 mΩ | | **Insulation Resistance** | > 500 MΩ | | **Dielectric Strength** | 1000V AC for 1 minute | --- ### Summary for Designers When integrating the **FJT-8A-R** into a circuit, ensure that the PCB footprint accounts for the SMT pads and the grounding points of the shield. Because it is a low-profile component, it is ideal for slim-line devices like routers, laptops, or embedded industrial controllers.