The part number **507-059NF04GL** refers to a high-reliability **Micro-D Backshell** manufactured by **Glenair**. This component belongs to the 507 series, specifically designed for use with MIL-DTL-83513 Micro-D connectors. --- ### 1. Technical Specifications The following table breaks down the technical attributes of this specific part number: | Attribute | Specification | Details | | :--- | :--- | :--- | | **Manufacturer** | Glenair | Leader in tactical/aerospace interconnects | | **Series** | 507 | Micro-D EMI/RFI Backshells | | **Shell Size** | 04 | Designed for specific contact arrangements | | **Material/Finish** | NF | Aluminum Alloy with Cadmium Olive Drab finish | | **Entry Style** | G | Side entry configuration | | **Hardware** | L | Latch/Screwlock mechanism (usually Jackscrews) | --- ### 2. Key Features and Functions #### EMI/RFI Shielding The primary electronic function of this backshell is to provide **Electromagnetic Interference (EMI)** and **Radio Frequency Interference (RFI)** protection. It acts as a Faraday cage around the wire terminations, preventing external noise from interfering with the signal and reducing emissions from the cable itself. #### Mechanical Strain Relief It protects the delicate solder or crimp joints within the Micro-D connector from mechanical stress. The "Side Entry" (indicated by the 'G' code) allows for lower profile cable routing in tight spaces compared to top-entry models. #### Environmental Protection The "NF" finish (Cadmium Olive Drab over Electroless Nickel) provides: * **Corrosion Resistance:** Rated for 500 to 1000 hours of salt spray. * **Conductivity:** Maintains electrical continuity for grounding purposes. --- ### 3. Common Applications Due to its rugged construction and high-performance shielding, this part is typically found in: * **Aerospace & Defense:** Avionics, missile guidance systems, and satellites. * **Downhole Drilling:** High-vibration sensors and telemetry. * **Medical Electronics:** Specialized diagnostic equipment requiring miniaturized interconnects. ---