The **10220-R21CFB** is a high-density, professional-grade electronic connector manufactured by **3M**. It belongs to the **MDR (Mini Delta Ribbon)** series, which is widely recognized for its use in high-speed data transmission and industrial computing applications. --- ## 1. Technical Specifications The following table outlines the primary electrical and physical characteristics of this component: | Feature | Specification | | :--- | :--- | | **Connector Type** | MDR Receptacle (Female) | | **Number of Positions** | 20 Pins | | **Mounting Type** | Through-Hole (Right Angle) | | **Pitch** | 0.050" (1.27 mm) | | **Current Rating** | 1.0 Amp | | **Voltage Rating** | 150 V AC/DC | | **Contact Plating** | Gold (typically 30µ") over Nickel | | **Shielding** | Fully Shielded (Metal Housing) | | **Locking Mechanism** | M2.5 Threaded Holes (for Jackscrews) | --- ## 2. Key Features and Design The "R21CFB" suffix specifies the exact configuration of the connector's physical interface: * **Right-Angle Orientation:** The connector sits at a 90-degree angle to the PCB, making it ideal for edge-mounting on motherboards or interface cards. * **Wiper-on-Wiper Contact:** Unlike standard pin-and-socket headers, the MDR series uses ribbon-style contacts. This design provides a reliable, low-wear connection suitable for high-cycle insertion. * **EMI/ESD Protection:** The metal shell provides excellent grounding and shielding, which is critical for maintaining signal integrity in noisy industrial environments. * **Board-Lock/Mounting:** It usually features "snap-fit" or screw-down metal tabs to ensure mechanical stability during cable mating/unmating. --- ## 3. Common Applications This specific connector is frequently found in the following sectors: 1. **Machine Vision:** Used extensively in **Camera Link** standard interfaces for industrial cameras. 2. **Data Communications:** High-speed I/O for telecommunications equipment. 3. **Industrial Controls:** Connecting PLCs (Programmable Logic Controllers) to peripheral sensors and actuators. 4. **Medical Equipment:** High-density signal routing in diagnostic machines. --- ## 4. Cross-Reference & Mating To use this part, you generally require the corresponding 3M MDR plug (male). Common mating cables include the **3M 10120 series** plugs.