The part number **2118059-1** refers to a high-performance **Standard Surface Mount (SMT) EMI Shielding Cover** manufactured by **TE Connectivity**. These components are critical in modern electronics for managing electromagnetic compatibility (EMC). --- ### 1. Technical Specifications The following table highlights the primary physical and technical characteristics of the 2118059-1: | Characteristic | Specification | | :--- | :--- | | **Manufacturer** | TE Connectivity | | **Product Type** | EMI/RFI Shield (Cover Only) | | **Material** | Cold Rolled Steel (CRS) | | **Plating** | Tin (Sn) | | **Length** | 12.96 mm (.510 in) | | **Width** | 12.70 mm (.500 in) | | **Height** | 2.54 mm (.100 in) | | **Mounting Style** | Removable (Snaps onto a frame) | --- ### 2. Functional Purpose The 2118059-1 serves as the **lid** or **cover** part of a two-piece shielding system. Its main roles include: * **EMI/RFI Suppression:** It blocks electromagnetic interference from escaping a specific circuit (like a high-frequency oscillator) or prevents external noise from interfering with sensitive components (like an RF receiver). * **Two-Piece Design:** Unlike one-piece shields that are soldered permanently, this cover snaps onto a matching **shield frame** (sold separately). This allows technicians to remove the cover for inspection, rework, or testing without desoldering. * **Thermal Management:** While primarily for electrical noise, the steel construction can assist in minor heat dissipation. --- ### 3. Application Areas This specific small-form-factor shield is commonly found in: 1. **Mobile Devices:** Smartphones and tablets to isolate Wi-Fi/Bluetooth modules. 2. **Consumer Electronics:** Smart home devices and IoT sensors. 3. **Automotive:** Infotainment systems and ADAS (Advanced Driver Assistance Systems) control units. 4. **Industrial:** Sensitive measurement equipment and wireless transmitters. --- ### 4. Installation Overview The part is designed for automated assembly: * **Packaging:** Usually provided in **Tape & Reel**, allowing pick-and-place machines to position it. * **Compatibility:** It must be paired with a compatible TE Connectivity frame (typically from the 2118058 series) that is reflow-soldered to the PCB.