The part number **47LAC-140G-R** typically refers to a high-density, small-form-factor connector, often associated with the **Gold-Finger** or **Edge Card** series used in telecommunications and server hardware. --- ### 1. General Specifications While specific datasheets can vary by manufacturer (such as Foxconn or Amphenol), the nomenclature generally follows these technical parameters: | Feature | Specification | Description | | :--- | :--- | :--- | | **Component Type** | Edge Card Connector | Used for PCB-to-PCB vertical or angled mating. | | **Pitch** | 0.8mm or 1.0mm | High-density spacing for compact electronics. | | **Pin Count** | 140 Pins | Total number of conductive contact points. | | **Plating** | Gold (G) | "G" often denotes gold plating on contact areas for high conductivity and corrosion resistance. | | **RoHS Status** | Compliant (R) | "R" typically signifies Lead-Free/RoHS compliance. | --- ### 2. Key Electronic Characteristics These parts are designed for high-speed signal integrity. Below are the typical electronic properties: * **Current Rating:** Usually 1.0A to 1.5A per pin. * **Voltage Rating:** Typically 125V AC/DC. * **Contact Resistance:** Low resistance (usually <30mΩ) to prevent signal degradation. * **Dielectric Withstanding Voltage:** Designed to handle 500V AC for 1 minute without breakdown. * **Insulation Resistance:** Minimum 1000MΩ. --- ### 3. Physical Construction The "47LAC" series is built to withstand industrial environments and high-cycle mating: 1. **Housing:** High-temperature thermoplastic (UL 94V-0 rated), suitable for reflow soldering. 2. **Contacts:** Copper alloy base with selective gold plating over nickel. 3. **Mounting:** Often SMT (Surface Mount Technology) or Press-fit, depending on the specific suffix. 4. **Orientation:** Right-angle or Vertical configurations are common to save vertical space on a motherboard. --- ### 4. Typical Applications This connector is frequently found in the following sectors: * **Data Centers:** PCIe expansion slots or storage array interfaces. * **Networking:** High-end switches and routers. * **Industrial PC:** Interface boards for automation controllers. * **Medical Equipment:** Modular diagnostic imaging hardware. ---