The **WJFX-U2C2-R** is a specific electronic component, typically categorized as a high-speed data connector, often associated with USB connectivity standards. Below is a detailed breakdown of its electronic parts and characteristics. --- ### 1. General Overview The WJFX series generally refers to **USB Type-C** connectors designed for Surface Mount Technology (SMT). These parts are engineered to handle high-speed data transfer and Power Delivery (PD). ### 2. Technical Specifications | Feature | Specification | | :--- | :--- | | **Connector Type** | USB Type-C (Female/Receptacle) | | **Mounting Type** | SMT (Surface Mount) + Through-hole Shell Tabs | | **Orientation** | Right Angle / Horizontal | | **Pin Count** | 24 Pins (Standard USB-C configuration) | | **Current Rating** | Typically 3A to 5A (Support for Fast Charging) | | **Data Rate** | USB 3.1 Gen 2 (up to 10 Gbps) or USB 4 compatible | --- ### 3. Key Electronic Components & Construction #### A. Contact Terminals (Pins) * **Material:** Usually Phosphor Bronze or Copper Alloy. * **Plating:** Gold plating on the contact area to ensure low electrical resistance and prevent oxidation over high insertion cycles. * **Function:** The 24 pins include VBUS (Power), GND (Ground), Configuration Channels (CC1/CC2), and Differential Pairs (D+/D-, TX/RX) for data. #### B. Insulator Body * **Material:** High-temperature Liquid Crystal Polymer (LCP) or Nylon. * **Purpose:** Provides structural integrity and electrical isolation between the 24 closely packed pins. It must withstand the heat of reflow soldering (approx. 260°C). #### C. External Shell (Shielding) * **Material:** Stainless Steel or Nickel-plated Steel. * **Purpose:** * **EMI/RFI Shielding:** Protects the signal from electromagnetic interference. * **Mechanical Strength:** Provides the "click" feel and ensures the connector stays attached to the PCB under physical stress. #### D. Mid-Plate * Many U2C2 variants feature an internal "Mid-plate" between the top and bottom rows of pins. This reduces crosstalk and improves signal integrity for high-speed protocols. --- ### 4. Typical Application Circuit When integrating this part, engineers look for the following pinout groups: ```cpp // Common USB-C Pin Mapping for WJFX series Pins A1, A12, B1, B12 -> GND (Ground) Pins A4, A9, B4, B9 -> VBUS (Power) Pins A5, B5 -> CC1 / CC2 (Configuration/Negotiation) Pins A6, A7 -> D+ / D- (Legacy Data) Pins A2, A3, B2, B3 -> TX / RX (High Speed Data) ``` ---