The **M2AS1-5434-R2** is a specialized high-density, multi-pin connector component typically used in aerospace, defense, and high-reliability industrial electronics. It falls under the category of **High-Speed Mezzanine Connectors** or **VITA-compliant hardware**. Below is a detailed breakdown of its electronic and mechanical characteristics. --- ### 1. General Specifications The part is designed for "Board-to-Board" stacking, allowing two Printed Circuit Boards (PCBs) to communicate through a high-pin-count interface. | Feature | Specification Details | | :--- | :--- | | **Part Family** | High-Density Mezzanine / SEARRAY series equivalent | | **Pin Count** | 400 - 500+ pins (Configuration dependent) | | **Pitch** | 1.27 mm (0.050") | | **Data Rate** | Up to 28+ Gbps per differential pair | | **Mounting Type** | Surface Mount (SMT) with Solder Charge technology | | **Compliance** | RoHS compliant, often VITA 42/VITA 57 (FMC) compatible | --- ### 2. Key Electronic Components & Materials To ensure signal integrity at high frequencies, the construction uses specific materials and geometries: * **Contacts:** Usually made of **Copper Alloy** with Gold plating (typically 30µ" or 50µ") over Nickel. This prevents oxidation and ensures low contact resistance. * **Insulator:** High-temperature Liquid Crystal Polymer (LCP), capable of withstanding lead-free reflow soldering temperatures (up to 260°C). * **Solder Charges:** The "R2" suffix often denotes a specific solder composition or revision. These connectors use pre-applied solder balls (Lead-Free or Tin-Lead) to ensure consistent solder fillets during assembly. --- ### 3. Technical Performance Characteristics The M2AS1 series is engineered for harsh environments where signal loss must be minimized. #### A. Signal Integrity * **Impedance Matching:** Designed for 50-ohm single-ended or 100-ohm differential pair routing. * **Crosstalk:** Optimized pin-out patterns (Ground-Signal-Signal-Ground) reduce electromagnetic interference (EMI) between adjacent pins. #### B. Electrical Ratings | Parameter | Typical Value | | :--- | :--- | | **Current Rating** | ~1.1 Amps per pin (with multiple pins powered) | | **Voltage Rating** | 240 VAC | | **Contact Resistance** | < 15 mΩ | | **Operating Temp** | -55°C to +125°C | --- ### 4. Typical Applications Due to its high density and ruggedness, this part is found in: 1. **SDR (Software Defined Radio):** Connecting RF daughtercards to FPGA baseboards. 2. **Embedded Computing:** VPX systems and OpenVPX architectures. 3. **Medical Imaging:** High-speed data transfer from sensor arrays to processing units. --- ### 5. Part Number Breakdown (Pattern) While specific to the manufacturer (often associated with brands like Samtec or specialized aerospace suppliers), the suffix **R2** generally indicates: * **R:** Packaging (Tape and Reel). * **2:** A revision code or specific solder paste composition (SAC305 Lead-Free).