Based on electronic component nomenclature, the part number **EB412R6SGX15** corresponds to a specific configuration of an **Edgeboard Connector** (specifically from the EB4 series, often manufactured by brands like Vishay Dale). These are typically used to connect printed circuit boards (PCBs) to a backplane or another motherboard. --- ## 1. Technical Specifications Table | Feature | Specification | Description | | :--- | :--- | :--- | | **Series** | EB4 | Dual Readout Edgeboard Connector | | **Number of Positions** | 12 | Total number of contact positions per side | | **Pitch Spacing** | 0.100" (2.54 mm) | Distance between the centers of adjacent contacts | | **Contact Style** | R (Right Angle) | Terminals are bent at 90 degrees for side mounting | | **Terminal Type** | 6 | Specific pin length/shape configuration | | **Mounting Style** | SG | Standard Mounting Ears / Thru-hole | | **Plating** | X | Selective Gold Plating (Gold on contact area, Tin/Lead on tails) | | **Modification Code** | 15 | Customer or factory specific variant code | --- ## 2. Component Breakdown ### A. Contact Geometry (The "R" and "6") * **Right Angle (R):** This indicates that the connector is designed to be soldered into a PCB so that the board being inserted sits horizontally relative to the motherboard. * **Pin Grid:** The "6" designation usually refers to the specific tail length and row spacing required to clear the PCB edge. ### B. Material and Plating ("X") * **Body Material:** Typically made of Diallyl Phthalate (DAP) or Phenolic, which offers high dielectric strength and heat resistance. * **Selective Plating:** The "X" code is crucial for cost-efficiency and performance. It ensures high-conductivity gold is used where the boards touch, while using more solderable materials (like Tin) on the pins that go into the PCB. ### C. Mechanical Mounting ("SG") * These are the "ears" on the side of the connector. The **SG** variant typically includes holes that allow the connector to be bolted or screwed to the chassis or PCB for added mechanical stability, preventing the solder joints from cracking under the weight of the daughterboard. --- ## 3. Common Applications 1. **Industrial Controls:** Connecting PLC modules to a main bus. 2. **Legacy Computing:** Used in older bus architectures (like ISA-style slots). 3. **Telecommunications:** Switching equipment where daughtercards are swapped frequently. 4. **Test Equipment:** Providing a robust interface for plug-in sensor boards. ---