The **M2CEC-12251-R2** is a specialized electronic component, typically identified as a high-density, high-speed connector assembly used in telecommunications, networking, and server infrastructure. It belongs to a class of interconnects designed for high-signal integrity and modular hardware designs. --- ### 1. Component Overview This part is often associated with **AdvancedTCA (ATCA)** or similar blade-server architectures. It serves as a bridge for power and high-speed differential signals between a backplane and a daughter card. | Feature | Specification | | :--- | :--- | | **Component Type** | High-Density Mezzanine/Backplane Connector | | **Material** | High-temperature thermoplastic with copper alloy contacts | | **Plating** | Selective Gold (Au) over Nickel (Ni) for corrosion resistance | | **Configuration** | Right-Angle (R2 usually denotes a revision or specific spatial orientation) | | **Data Rates** | Optimized for 10 Gbps+ (depending on specific system impedance) | --- ### 2. Key Electronic Characteristics The "Electronic Parts" within this assembly focus on maintaining electrical stability under high-frequency conditions: * **Signal Integrity (SI):** The internal lead-frame is designed to minimize crosstalk and electromagnetic interference (EMI). * **Impedance Matching:** Usually tuned to **100 Ohms** differential impedance to match standard PCB traces for Ethernet, PCIe, or InfiniBand protocols. * **Contact Resistance:** Extremely low (typically <25 mΩ) to ensure minimal voltage drop across the connector interface. * **Current Rating:** While primarily for signals, certain pins are often rated for 1A–3A to support low-power logic rails. --- ### 3. Physical Architecture The "R2" revision often implies a specific mechanical footprint or improved latching mechanism compared to the original R1 version. * **Press-Fit Technology:** Most versions of this part use "Eye-of-the-Needle" compliant pins. This allows the part to be pressed into the PCB without soldering, which preserves the board's thermal profile. * **Shielding:** The outer casing usually includes grounding "fingers" or a metallic shroud to provide a 360-degree path for return currents. --- ### 4. Typical Applications 1. **Network Switches:** Connecting line cards to the main switching fabric. 2. **Edge Computing:** Ruggedized modules where vibration resistance and high pin density are required. 3. **Industrial Automation:** High-speed data acquisition backplanes.