The **A-USB-4-R** is a specific electronic component manufactured by **Assmann WSW Components**. It is a standard **USB 2.0 Type A Female Connector** designed for Through-Hole (THT) mounting on Printed Circuit Boards (PCBs). --- ### 1. Technical Specifications The following table highlights the core electrical and physical characteristics of the A-USB-4-R: | Feature | Specification | | :--- | :--- | | **Connector Type** | USB Type A | | **Gender** | Female (Receptacle) | | **USB Version** | USB 2.0 (High Speed) | | **Mounting Type** | Right Angle, Through-Hole (THT) | | **Number of Contacts** | 4 Pins | | **Current Rating** | 1.0A to 1.5A per contact | | **Voltage Rating** | 30V AC/DC | | **Housing Material** | Thermoplastic (UL94V-0 rated) | | **Contact Plating** | Gold (mating side), Tin (solder side) | --- ### 2. Physical Design and Pinout The A-USB-4-R features a "Right Angle" orientation, meaning the port faces outward from the edge of the PCB while the pins are soldered vertically into the board. #### Pin Configuration (Standard USB 2.0) 1. **VCC (+5V):** Power supply. 2. **D-:** Data negative. 3. **D+:** Data positive. 4. **GND:** Ground. *Note: The metal shield (outer shell) is usually connected to the chassis ground for EMI shielding.* --- ### 3. Key Electronic Features * **Shielding:** The component is encased in a nickel-plated brass or steel shell to prevent Electromagnetic Interference (EMI) and provide structural durability. * **Kinked Board Locks:** The metal tabs on the side are often "kinked" to hold the connector securely in place against the PCB during the wave soldering process. * **Durability:** Rated for approximately 1,500 to 5,000 mating cycles. --- ### 4. Common Applications * **Computer Peripherals:** Keyboards, mice, and flash drives. * **Embedded Systems:** Adding USB connectivity to microcontrollers (like Arduino or ESP32 dev boards). * **Power Supply:** Used as a 5V output port for charging devices. * **Industrial Equipment:** Data logging and interface ports.