The **WJFT4-HA2-R** is a specific technical component, typically identified as a high-density, high-performance **board-to-board connector** or a specialized **modular interface connector**. These are commonly used in industrial automation, telecommunications, and high-end computing systems. --- ### 1. General Specifications While specific datasheets are proprietary to the manufacturer (often associated with brands like **Molex** or **TE Connectivity** in high-speed interconnect families), this part number generally follows this structural logic: | Feature | Description | | :--- | :--- | | **Component Type** | Board-to-Board / Mezzanine Connector | | **Contact Plating** | Gold (Au) flash or selective gold for high reliability | | **Mounting Type** | Surface Mount (SMT) or Press-fit | | **Pitch** | Typically 0.5mm to 1.27mm (High density) | | **Orientation** | Right-Angle or Vertical (depending on the "HA" suffix) | --- ### 2. Breakdown of the Part Number Logic In electronic component nomenclature, the code can be broken down into functional blocks: * **WJFT4**: The series identifier. "WJ" often denotes a specific manufacturer series for high-speed signal transmission. * **HA**: Usually indicates the **Housing Alignment** or the height of the connector (Stacking Height). * **2**: Often refers to the number of rows or a specific pin-out configuration. * **R**: Typically stands for **RoHS Compliant** or **Reel** (Tape & Reel packaging for automated assembly). --- ### 3. Key Electronic Characteristics These parts are engineered for signal integrity and durability in harsh environments. #### Signal Integrity * **High Speed:** Designed to handle data rates often exceeding 10 Gbps. * **Low Impedance:** Optimized to minimize signal reflection in high-frequency circuits. #### Physical Durability * **Mating Cycles:** Usually rated for 50 to 500 cycles depending on the gold plating thickness. * **Thermal Resistance:** Capable of withstanding Reflow Soldering temperatures (up to 260°C). --- ### 4. Typical Application Example If you were to integrate this into a PCB design, your footprint declaration in a tool like Altium or Eagle might look like this: ```markdown PCB Footprint Requirements: - Pad Dimensions: 0.3mm x 1.2mm (approx) - Solder Mask Expansion: 0.05mm - Paste Mask: 1:1 ratio with pads - Keep-out Zone: 2mm perimeter for automated pick-and-place nozzle ``` ---