The **WJFX-U2D1-R** is a specific electronic component, primarily identified as a **Micro USB Connector** (specifically USB 2.0 Type-B Micro) manufactured by companies like **WJ (Wanjie)**. It is widely used in mobile devices, charging modules, and small embedded systems. Below is a detailed breakdown of its electronic specifications and technical characteristics. --- ### 1. Technical Specifications The following table outlines the core electrical and mechanical parameters for this component: | Parameter | Specification | | :--- | :--- | | **Connector Type** | Micro USB 2.0 Type-B | | **Gender** | Female (Receptacle) | | **Mounting Type** | Surface Mount (SMT) + DIP (Shield Tabs) | | **Current Rating** | 1.0A - 1.8A (per pin) | | **Voltage Rating** | 30V AC/DC | | **Insulation Resistance** | 100 MΩ Min | | **Contact Resistance** | 30 mΩ Max | | **Durability** | 10,000 Mating Cycles | --- ### 2. Key Electronic Parts & Construction The component is composed of several critical materials that ensure electrical conductivity and structural integrity: * **Contacts (Pins):** Usually made of **Copper Alloy**. They are typically gold-plated (3u" to 30u") to prevent oxidation and ensure low contact resistance over thousands of plug-in cycles. * **Insulator (Housing):** Made of high-temperature thermoplastic (e.g., LCP or PA9T). This material must withstand the heat of reflow soldering (up to 260°C). * **Shell (Shielding):** Stainless steel or nickel-plated brass. The shell provides EMI (Electromagnetic Interference) shielding and structural grounding to the PCB. --- ### 3. Pinout Configuration The WJFX-U2D1-R follows the standard Micro USB 5-pin layout: 1. **VBUS (+5V):** Power supply pin. 2. **D- (Data Minus):** Differential data pair. 3. **D+ (Data Plus):** Differential data pair. 4. **ID:** Identification pin (used for OTG functions). 5. **GND:** Ground. --- ### 4. Mounting Geometry This specific part number usually refers to a **"Mid-Mount"** or **"Bottom-Mount"** configuration: * **SMT Leads:** The five signal pins are surface-mounted to the top of the PCB pads. * **DIP/Through-hole Legs:** The outer metal shell has "legs" that go through the PCB to provide mechanical strength, preventing the connector from being ripped off the board during cable insertion. ---