The **PHEC80P-R21** is a high-density, board-to-board connector part of the **PHEC series** manufactured by **Kel Corporation**. These connectors are widely used in industrial equipment, medical devices, and telecommunications for reliable PCB stacking. ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Series** | PHEC (Plug) | | **Number of Pins** | 80 Pins | | **Pitch** | 1.27 mm (0.050") | | **Type** | Right Angle (R) | | **Mounting Style** | Through-hole | | **Gender** | Male (Plug/Header) | | **Contact Material** | Copper Alloy | | **Plating** | Gold over Nickel | --- ### 2. Physical and Mechanical Characteristics * **Right Angle Orientation:** The "R" in the part number signifies a right-angle orientation, allowing for perpendicular board-to-board mating (Side-entry). * **High Pin Density:** With 80 contacts spaced at a 1.27mm pitch, it provides a compact footprint for high-signal-count applications. * **Durability:** Designed for high mating cycles. The use of gold plating ensures low contact resistance and prevents oxidation over time. * **Sturdy Housing:** Usually constructed from glass-filled PBT (Polybutylene Terephthalate) or LCP (Liquid Crystal Polymer) for high thermal resistance during soldering. --- ### 3. Electrical Performance | Parameter | Value | | :--- | :--- | | **Current Rating** | 1.0 A per contact | | **Voltage Rating** | 125V AC | | **Insulation Resistance** | 1000 MΩ minimum (at 500V DC) | | **Contact Resistance** | 30 mΩ maximum | | **Dielectric Withstanding Voltage** | 600V AC for 1 minute | --- ### 4. Application Areas The PHEC80P-R21 is commonly found in environments where vibration resistance and signal integrity are critical: 1. **Industrial Automation:** PLCs, motor controllers, and robotics. 2. **Medical Electronics:** Imaging equipment and diagnostic tools. 3. **Computing:** Server backplanes and storage array controllers. 4. **Telecommunications:** Networking switches and routers. --- ### 5. Cross-Reference Information When sourcing this part, ensure the suffix **R21** matches your PCB layout. The "21" typically refers to the specific tail length or a variation in the retention clips (hooks) used to secure the connector to the board before soldering.