The **M2AS1-A134-R2** is a specialized high-density electrical connector, typically part of a blind-mate or mezzanine board-to-board system. These components are frequently used in aerospace, defense, and high-end industrial computing (such as VPX or OpenVPX architectures). Below is the technical breakdown of its electronic and mechanical characteristics. --- ### 1. General Specifications This part belongs to a high-speed, high-reliability interconnect family. Its design focuses on signal integrity and durability in harsh environments. | Feature | Specification (Typical) | | :--- | :--- | | **Component Type** | Mezzanine Connector / Plug | | **Contact Plating** | Gold (Au) over Nickel | | **Termination Style** | Solder Ball / BGA (Ball Grid Array) | | **Pin Count** | High Density (varies by sub-series, often 100+) | | **Orientation** | Vertical / Straight | | **Data Rates** | Support for PCIe Gen 3/4, 10GbE, and SATA | --- ### 2. Key Electronic Features #### A. Signal Integrity * **Differential Pairing:** The internal lead frames are designed to minimize crosstalk, making them suitable for high-speed differential signals. * **Impedance Control:** Usually matched to **100Ω** (standard) or **85Ω** (custom) to prevent signal reflections in high-frequency circuits. #### B. Current & Voltage Ratings * **Current Rating:** Typically **1.0A to 1.5A** per contact. While not designed for high-power transmission, they can handle low-power distribution across multiple pins. * **Voltage Rating:** Generally rated for **200V AC to 500V AC** (dielectric withstanding voltage). #### C. Environmental Resistance * **Temperature Range:** Operates between **-55°C to +125°C**, meeting military-grade thermal requirements. * **Outgassing:** Often meets NASA/ESA outgassing requirements for space-flight applications. --- ### 3. Structural Components The "R2" suffix in the part number often denotes a specific revision or a specific ROHS compliance status (Lead-Free vs. Leaded solder balls). 1. **Insulator Body:** Made of Liquid Crystal Polymer (LCP), providing high thermal resistance during the reflow soldering process. 2. **Contact Interface:** Features a "Dual-Beam" or "Box-style" contact design to ensure redundant points of contact, critical for high-vibration environments. 3. **Alignment Pins:** Integrated guide posts to ensure correct polarity and prevent pin damage during blind mating. --- ### 4. Common Applications * **VPX Backplanes:** Interconnecting CPU blades to high-speed data planes. * **Avionics:** Flight control computers where space is limited and reliability is paramount. * **Satellite Systems:** Used for modular electronic stacks.