The **10240-R21CFB** is a specific electronic component belonging to the **MDR (Mini Delta Ribbon)** connector series, manufactured by **3M**. It is widely used in industrial automation, telecommunications, and high-speed data transmission interfaces (like Camera Link). --- ### 1. Technical Specifications The part number breakdown identifies the following key characteristics: | Feature | Specification | | :--- | :--- | | **Connector Type** | MDR (Mini Delta Ribbon) | | **Position Count** | 40 Pins | | **Gender** | Receptacle (Female) | | **Mounting Type** | Through-hole, Right Angle | | **Shielding** | Fully Shielded (Metal Shroud) | | **Contact Plating** | Gold over Nickel | | **Termination** | Solder Tail | --- ### 2. Key Features and Construction * **High Pin Density:** Provides 40 points of contact in a compact "D-shaped" interface, allowing for significant space savings on the PCB. * **Ribbon Contact Design:** Unlike traditional pin-and-socket connectors, MDR uses a ribbon-style contact which is more robust and offers lower insertion force. * **EMI/ESD Protection:** The metal shell (R21 suffix designation) provides excellent grounding and protection against electromagnetic interference. * **Board-Lock Mechanism:** Often features mechanical "latches" or screw locks to ensure the cable remains securely connected under vibration. --- ### 3. Common Applications This part is typically found in environments requiring high-speed signal integrity: 1. **Industrial Machine Vision:** Used in Camera Link compliant hardware for transmitting high-resolution images. 2. **Medical Imaging:** Connecting sensors and displays in diagnostic equipment. 3. **Data Communications:** High-density I/O interfaces for networking hardware. 4. **PLC Systems:** Interfacing programmable logic controllers with peripheral modules. --- ### 4. Comparison with Standard D-Sub | Feature | MDR (10240-R21CFB) | Standard D-Sub (DB37/50) | | :--- | :--- | :--- | | **Size** | Small / Miniature | Large / Bulky | | **Speed** | High-speed differential signaling | Low-speed serial/parallel | | **Contact Style** | Flat Ribbon | Round Pin |