The **M2CEC-140C-R** is a high-density, high-speed mezzanine connector typically utilized in telecommunications, networking, and industrial computing applications. It is part of the **M2C** (Mezzanine to Connector) series, often associated with manufacturers like **Amphenol** or **AICC**. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Number of Positions** | 140 pins | | **Configuration** | Mezzanine (Board-to-Board) | | **Pitch** | 0.5mm - 0.8mm (Depending on specific series variant) | | **Mounting Type** | Surface Mount (SMT) | | **Data Rate Support** | High-speed (capable of 10-28+ Gbps) | | **Contact Material** | Copper Alloy with Gold Plating | | **Orientation** | Vertical / Straight | --- ### 2. Physical and Structural Design * **Gender and Type:** This part is a **Plug** or **Receptacle** component designed for "stacking" two Printed Circuit Boards (PCBs) parallel to each other. * **High Density:** With 140 contacts in a compact form factor, it minimizes PCB footprint while maximizing signal I/O. * **Alignment Features:** The connector usually features polarization "bosses" or guide posts to ensure correct orientation during assembly and to prevent mismatching. * **Ruggedness:** The "R" suffix often denotes **RoHS compliance** or specific **Tape and Reel** packaging for automated pick-and-place assembly. --- ### 3. Electrical Characteristics * **Signal Integrity:** Designed with impedance control (usually 85Ω or 100Ω) to minimize crosstalk and return loss in high-frequency applications. * **Current Rating:** Typically rated for 0.5A to 1.0A per contact, making it suitable for signal transmission rather than high-power delivery. * **Voltage Rating:** Generally rated around 50V - 125V AC/DC. --- ### 4. Common Applications 1. **Blade Servers:** Connecting daughtercards to motherboards. 2. **FPGA Development Boards:** Providing high-speed expansion headers for I/O modules. 3. **Storage Systems:** High-speed data transfer between controllers and backplanes. 4. **Telecom Switches:** Handling massive throughput between line cards. ---