The **M2SES-261-R** is a specific electronic component typically classified as a **D-Subminiature (D-Sub) high-density vertical connector**. These are commonly used in industrial automation, telecommunications, and high-reliability computing environments. Below is a detailed breakdown of its electronic and mechanical parts. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its physical and electrical characteristics. | Feature | Specification | | :--- | :--- | | **Connector Type** | High-Density D-Sub | | **Number of Positions** | 26 Pins | | **Gender** | Receptacle (Female) | | **Mounting Type** | Through-hole (Vertical / Straight) | | **Termination Style** | Solder | | **Plating** | Selective Gold (on contact area) / Tin (on tails) | | **Orientation** | 180° (Straight) | --- ### 2. Physical Components & Materials The construction of the M2SES-261-R consists of four primary elements: #### A. The Contacts (Pins/Sockets) * **Material:** Usually made of a copper alloy (Phosphor Bronze or Brass). * **Function:** Conducts electrical signals. The "R" in the suffix often indicates a specific plating or RoHS compliance. * **Plating:** Gold flash or 15-30µ" Gold on the mating surface to prevent oxidation and ensure low contact resistance over time. #### B. The Insulator (Housing) * **Material:** High-temperature thermoplastic (e.g., PBT or Nylon). * **Function:** Separates the 26 pins to prevent short circuits. It is designed to withstand the heat of wave soldering. #### C. The Metal Shell * **Material:** Steel with Tin or Nickel plating. * **Function:** Provides mechanical strength, EMI/RFI shielding, and grounding when mated with a male connector. #### D. Mounting Hardware * **Features:** Often includes board locks or threaded inserts (4-40 UNC) to secure the connector to the PCB and the mating cable. --- ### 3. Electronic Performance Data | Parameter | Typical Value | | :--- | :--- | | **Current Rating** | 1A to 3A per contact | | **Voltage Rating** | 250V AC/DC | | **Insulation Resistance** | > 1000 MΩ | | **Contact Resistance** | < 20 mΩ | | **Operating Temperature** | -55°C to +105°C | --- ### 4. Common Applications * **Industrial Controllers:** Used for PLC (Programmable Logic Controller) I/O ports. * **Video Interfaces:** High-density 26-pin layouts are sometimes used in specialized VGA or RGB video routing. * **Data Transmission:** Connecting peripheral devices where space is limited but high pin density is required.