The part number **280-059S** typically refers to a high-performance **Micro-D Connector** backshell or accessory, manufactured by companies like **Glenair**. These components are critical in aerospace, defense, and high-reliability industrial applications. ### 1. Overview of 280-059S The 280-059S is a **EMI/RFI Shield Termination Backshell** designed for use with Micro-D (MIL-DTL-83513) connectors. Its primary purpose is to provide mechanical strain relief and electromagnetic interference (EMI) protection for the wire bundle entering the connector. --- ### 2. Technical Specifications | Feature | Description | | :--- | :--- | | **Series** | Glenair Series 28 HiPer-D or Standard Micro-D | | **Material** | Aluminum Alloy (Commonly) or Stainless Steel | | **Plating Options** | Electroless Nickel, Cadmium, or Gold | | **Entry Type** | Side Entry (The "S" usually denotes side-exit for cables) | | **Shielding** | 360° EMI/RFI protection | | **Attachment** | Jackscrew or Clip-on mounting | --- ### 3. Key Functions 1. **EMI/RFI Protection:** The metal housing acts as a Faraday cage, preventing external electronic noise from interfering with signals and stopping the cable from emitting radiation. 2. **Strain Relief:** It secures the cable bundle so that physical pulling or vibration does not damage the delicate solder or crimp joints inside the Micro-D connector. 3. **Environmental Sealing:** When used with gaskets, it helps protect the internal contacts from dust and moisture. 4. **Space Efficiency:** Micro-D components are significantly smaller than standard D-Sub connectors, making the 280-059S ideal for compact electronics like UAVs and satellites. --- ### 4. Common Applications * **Aerospace:** Cockpit avionics and flight control systems. * **Military:** Ruggedized handheld radios and tactical gear. * **Medical:** High-resolution imaging equipment. * **Space:** Satellite bus wiring where low weight and high shielding are mandatory. ---