The **LC2-122-R/Q** is a high-performance, shielded power inductor part of the **LC2 series** (often associated with manufacturers like Eaton/Coiltronics). These components are primarily used for energy storage and filtering in power conversion circuits. --- ### 1. Technical Specifications The part number follows a specific nomenclature. Below are the typical technical parameters for the "122" variant: | Parameter | Specification | | :--- | :--- | | **Inductance** | 1.2 µH (Microhenries) | | **Tolerance** | ±20% | | **Current Rating (Irms)** | High (Typically 25A - 35A range depending on size) | | **Saturation Current (Isat)** | High Peak (Handles surges without losing inductance) | | **DCR (DC Resistance)** | Ultra-low (Typically < 2.0 mΩ) | | **Shielding** | Magnetically Shielded (Low EMI) | --- ### 2. Physical & Material Composition * **Core Material:** Usually a Metal Powder or Carbonyl Iron core. This allows for soft saturation characteristics, meaning the inductance doesn't drop off instantly when current increases. * **Construction:** * **Shielded:** The winding is enclosed, minimizing electromagnetic interference (EMI) with surrounding components. * **Surface Mount (SMD):** Designed for automated PCB assembly. * **Termination:** Lead-free, RoHS compliant (indicated by the "-R"). --- ### 3. Key Features * **High Power Density:** Large current handling capability in a small footprint. * **Low Core Loss:** Optimized for high-frequency switching power supplies. * **Thermal Stability:** Operates effectively across a wide temperature range (typically -40°C to +125°C). --- ### 4. Typical Applications These inductors are commonly found in high-demand electronic environments: 1. **Voltage Regulator Modules (VRM):** Used in CPU/GPU power delivery for servers and desktops. 2. **DC-DC Converters:** Point-of-load (POL) converters where high efficiency is required. 3. **Battery Powered Systems:** Handheld devices that require low DCR to extend battery life. 4. **Automotive Electronics:** Infotainment and ECU power filtering (if AEC-Q200 qualified). --- ### 5. Part Number Breakdown * **LC2:** Series name (High current, low profile). * **122:** Inductance code ($1.2 \times 10^2$ nH, or **1.2 µH**). * **-R:** RoHS Compliant. * **-Q:** Often denotes Automotive Grade (AEC-Q200) or a specific packaging/testing standard.