The part number **10226-R21CS** refers to a high-density I/O connector from the **3M™ Mini Delta Ribbon (MDR) Series**. Specifically, it is a 26-position, wire-to-board, right-angle plug designed for high-speed data transmission. --- ## 1. Technical Specifications | Feature | Specification | | :--- | :--- | | **Manufacturer** | 3M | | **Series** | Mini Delta Ribbon (MDR) | | **Number of Positions** | 26 | | **Pitch** | 0.050" (1.27 mm) | | **Mounting Type** | Through Hole, Right Angle | | **Contact Gender** | Male (Plug) | | **Shielding** | Fully Shielded (Steel/Nickel plating) | | **Locking Mechanism** | Screw Lock (Usually M2.5 or 2-56) | --- ## 2. Key Components & Materials ### A. Contact Design * **Wiping Contact:** The connector uses a ribbon-style "wiping" contact rather than a pin-and-socket. This provides a larger surface area for electricity to flow and ensures a reliable connection through repeated cycles. * **Plating:** Usually features Gold (Au) over Nickel (Ni) on the contact area to prevent oxidation and ensure signal integrity. ### B. Shell & Shielding * The **Metal Shell** provides EMI/ESD protection, which is critical for the high-speed communication interfaces (like Camera Link) where this connector is commonly used. ### C. Termination * The "R21" designation typically refers to the specific orientation (Right Angle) and the mounting post configuration for the PCB. --- ## 3. Common Applications This specific connector series is the industry standard for several high-tech interfaces: 1. **Camera Link:** Used extensively in machine vision and industrial cameras for transmitting high-bandwidth video data. 2. **LVDS (Low-Voltage Differential Signaling):** Ideal for digital displays and high-speed data backplanes. 3. **Industrial Robotics:** Used for sensors and control systems where space is limited but high pin density is required. 4. **Medical Equipment:** Found in imaging devices requiring shielded, secure connections. --- ## 4. Advantages * **High Density:** Allows 26 pins in a very small footprint compared to D-Sub connectors. * **Durability:** Designed for industrial environments with secure screw-down latches. * **Low Crosstalk:** The ribbon contact design reduces signal noise at high frequencies.