The part number **M2AS1-6422-R2/Q** refers to a high-density, high-speed connector system, typically used in backplane or mezzanine applications within the telecommunications and data networking industries. This specific nomenclature is most commonly associated with **ERNI (TE Connectivity)** or similar high-performance interconnect manufacturers. --- ### Technical Specifications Breakdown | Feature | Description | | :--- | :--- | | **Component Type** | Mezzanine/Backplane Board-to-Board Connector | | **Series** | Often part of the MicroSpeed or ERmet series | | **Pin Count** | 64 Pins (indicated by the '64' in the suffix) | | **Pitch** | Typically 1.0mm or 1.27mm (depending on specific sub-series) | | **Data Rate** | Capable of high-speed differential signaling (up to 25+ Gbps) | | **Mounting Style** | Surface Mount (SMT) or Press-fit | | **Termination** | Gold-plated contacts for high reliability | --- ### Key Features and Applications #### 1. Signal Integrity These connectors are engineered to minimize crosstalk and impedance mismatch. The "R2" often signifies a specific revision or height variation used to achieve precise stacking heights between two parallel PCBs. #### 2. Durability * **Shielding:** Integrated shielding helps manage Electromagnetic Interference (EMI). * **Robustness:** Designed for high mating cycles (typically 500+). * **Polarization:** Features mechanical "keys" to prevent incorrect insertion. #### 3. Typical Usage * **Telecommunications:** Base stations and switching hardware. * **Medical Equipment:** High-resolution imaging systems requiring fast data transfer. * **Industrial Computing:** Embedded systems and Single Board Computers (SBCs). --- ### Comparison: Male vs. Female Versions While the base part number describes the family, the exact configuration determines the physical interface: | Parameter | Male (Plug) | Female (Receptacle) | | :--- | :--- | :--- | | **Contact Design** | Blade-style pins | Dual-beam spring contacts | | **Profile** | Usually determines stacking height | Fixed height | | **Wipe Length** | Long wipe for secure contact | Recessed for protection | ---