The **W5RS-641-R** is a specific part number typically associated with **RJ45 Modular Jacks** manufactured by companies like **Yamaichi Electronics**. These connectors are widely used in networking equipment for Ethernet connectivity. Below is a detailed breakdown of its electronic and mechanical specifications. --- ## 1. Technical Specifications The W5RS series is designed for high-reliability data transmission. Here are the core electronic characteristics: | Feature | Specification | | :--- | :--- | | **Connector Type** | RJ45 (8P8C - 8 Positions, 8 Contacts) | | **Orientation** | Right Angle (90-degree) | | **Mounting Type** | Through-Hole (PCB Mount) | | **Shielding** | Fully Shielded (Metal Shell) | | **Number of Ports** | Single Port (1x1) | | **Current Rating** | 1.5 Amps (Typical) | | **Voltage Rating** | 125V AC | | **Contact Resistance** | 30m $\Omega$ Max | --- ## 2. Key Electronic Components & Materials The reliability of the W5RS-641-R stems from its material composition: ### A. Contact Plating * **Base Material:** Phosphor Bronze. * **Plating:** Gold plating over Nickel. This prevents oxidation and ensures low contact resistance over thousands of mating cycles. ### B. Shielding (EMI/RFI Protection) * The **"R"** in the suffix often denotes compliance with specific environmental or shielding standards. * The metal housing acts as a Faraday cage, protecting the signal from Electromagnetic Interference (EMI) and Radio Frequency Interference (RFI), which is critical for high-speed Ethernet (10/100/1000 Mbps). ### C. Housing (Insulator) * Usually made of High-Temperature Thermoplastic (e.g., LCP or PBT). * **Flammability Rating:** Typically UL94V-0. --- ## 3. Physical Footprint (Pinout) The "641" designation usually refers to the specific physical layout of the pins. In a standard W5RS-641-R configuration: 1. **Signal Pins:** 8 pins arranged in a staggered pattern for PCB stability. 2. **Shield Tabs:** Located on the sides or bottom to provide a grounded connection to the PCB chassis ground. 3. **Plastic Pegs:** Used for mechanical alignment during the soldering process. --- ## 4. Common Applications Due to its robust shielding and compact right-angle design, this part is found in: * **Industrial PCs:** Where vibration resistance is necessary. * **Networking Hubs/Switches:** As the physical interface for LAN cables. * **Embedded Systems:** On development boards (like single-board computers).