The **M2SES-261-R** belongs to the family of high-density, multi-pin connectors typically used in aerospace, defense, and high-reliability industrial applications. Based on the part numbering convention (common to manufacturers like AirBorn), this component is a **Micro-D** style surface-mount vertical receptacle. --- ### 1. Component Overview The M2SES series is designed for environments where space is at a premium and high vibration resistance is required. The "R" suffix generally indicates a **Receptacle** (female) configuration. | Feature | Specification | | :--- | :--- | | **Connector Type** | Micro-D / High-Density Rectangular | | **Orientation** | Vertical / Straight | | **Mounting Type** | Surface Mount (SMT) | | **Contact Count** | 26 Pins (specific to the 261 code) | | **Gender** | Receptacle (Female) | --- ### 2. Key Electronic & Physical Characteristics #### A. High-Density Pinout The connector utilizes a 0.050" (1.27 mm) pitch. This allows for 26 connections in a footprint significantly smaller than standard D-Sub connectors. #### B. Contact Material and Plating * **Base Material:** Usually a copper alloy (Beryllium Copper). * **Plating:** High-grade gold plating (typically 50 micro-inches) over nickel to ensure low contact resistance and prevent oxidation over long lifespans. #### C. Environmental Durability These parts are engineered to meet or exceed military-grade specifications (often referencing MIL-DTL-83513 standards): * **Operating Temperature:** -55°C to +125°C. * **Vibration/Shock:** High resistance due to the "twist pin" contact system (if using AirBorn's proprietary tech). --- ### 3. Electrical Specifications While specific data can vary by the exact revision of the datasheet, standard M2SES parameters include: | Parameter | Typical Value | | :--- | :--- | | **Current Rating** | 3 Amps per contact | | **Dielectric Withstanding Voltage** | 600 VAC at sea level | | **Insulation Resistance** | 5,000 Megohms minimum | | **Contact Resistance** | 8 Milliohms maximum | --- ### 4. Application Use Cases * **Aerospace Avionics:** Connecting PCB boards in flight control systems. * **Medical Equipment:** High-reliability imaging or diagnostic tools. * **Downhole Drilling:** Sensors used in high-heat and high-pressure environments. ---